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PROJECT FINANCIAL REQUIREMENTS TO HEAP LEACH 50,000 METRIC TONS OF
GOLD ORE TAILINGS IN KARAMOJA (MORUITA) TO RECOVER AN ESTIMATED 90
KILOGRAMS OF GOLD
EXECUTIVE SUMMARY
The project is located in Nakapiripirit District in Uganda. Specifically in Moruita Sub-county, Acherer
village.
The intention is to heap leach 50,000 tons of gold rich tailings with an average yield of 1.8 – 2.5 grams
per ton. This will yield approximately 90 kilograms of gold with a value of about $5,400,000.
The project will be divided in phases of leaching cycles for cost management.
Each leaching cycle will have 5,000 tons, with a target of 9-10 kilograms of gold. The financial
requirements can be broken down into the leaching cycles.
HEAP LEACHING
Heap leaching is a process through which metals are extracted from the ore in which they are found. Heap
leaching is often chosen for its efficiency and cost-effectiveness. As the need for resources increase, the
heap leaching industry has risen to the occasion with advancements creating an even more efficient leach.
One of which, is the process of agglomerating the ore prior to the leach.
In gold extraction technologies, the gold heap leaching process flow has been widely used because of
its simple process, low energy consumption, less equipment configuration, low capital construction
investment, and production cost, which is especially suitable for treating low-grade gold ore.
In production, the common gold heap leaching process flow mainly includes six stages: ore preparation,
leaching pad construction, heap building, leaching solution preparation, solution distribution and
collection, rich solution (precious solution) processing.
1. Ore preparation
The ore preparation stage mainly includes crushing, granulation, and pretreatment operations, whose
purpose is to improve the ore leachability and leaching pile permeability, avoid liquid flow irregularity,
blockage, ditch flow, and other phenomena, improve the recovery rate of gold ore and reduce the
consumption of leaching solution.
Crushing
Different crushing processes are carried out according to the ore properties and technological
requirements. The waste ore generally doesn’t need crushing (30%), the ore particle size after two-stage
crushing is 30-50mm (53%), and the ore particle size after three-stage crushing is 9-19mm (17%). It has
been proved that crushing is one of the key technical links to ensure the good permeability of ore and
improve the leaching rate of gold ore.
Granulation
The granulation is required first for the fine ore and high clay containing ore. Adding a certain amount
(3-6kg/t) of cement and lime adhesive to the ore, then adding an appropriate amount of sodium cyanide
solution, keeping the ore 8-12% of humidity, curing 8-12h, thus forming the ore group. The granulation
treatment improves the permeability of the ore heap, keeps the sufficient oxygen supply, dissolves the
gold by cyanide in advance, and greatly improves the gold leaching rate.
This process often uses a cylinder granulator, disc granulator, multi-section belt granulator.
Among them, the belt granulator can directly send the fine ore after the granulation to the heap leaching
field, while the cylinder granulator is especially suitable for the high clay-containing ore.
Pre-treatment
In the granulation process, sometimes it is necessary to add a leaching solution to pretreat the ore, whose
purpose is to improve the permeability of the leaching heap and the leaching rate of useful components
of the ore.
2. Leaching pad construction
In order to collect the rich liquid and prevent the leakage of the solution, the bottom of the yard should
be repaired and bedding before the heap building. The materials used in the construction of the leaching
pads are clay, sand, gravel, asphalt, reinforced concrete, plastic film, or rubber plastic plate. Depending
on the different materials, the thickness of the cushion layer is generally 300-600mm. The longitudinal
and transverse drainage ditches are paved with block ore in the cushion layer, and then a layer of large
ore is laid on the whole bottom plate to protect the bottom pad.
3. Heap building
The purpose of heap building is to make the ore pile have good and uniform permeability, and ensure
that the slope will not collapse. The height of the ore heap mainly depends on the permeability of the ore
heap, the content of the leaching agent in the leaching solution, the equipment, and the method used in
heap building.
Generally, the heap height is 3-9m, and the heap of raw ore can be as high as 46m. There are many ways
to build the heap, such as the multi-heap method, multi-layer method, slope method. Most of the gold
heap leaching plants often use cars, front-end loaders, bulldozers to unload ore to build the heap, and
timely loosen the heap.
4. Leaching solution preparation
The leaching solution used for leaching the useful components from gold ore is prepared with water and
leaching agent according to a certain formula. The common leaching agents include sulfuric acid, nitric
acid, hydrochloric acid, sodium carbonate, sodium bicarbonate, ammonium carbonate, ammonium
bicarbonate, ferric sulfate, chloride, sodium iodide, potassium iodide, ammonium sulfate, air, oxygen,
permanganate, nitrogen oxides, hydrogen peroxide, and chlorate. The formula and dosage of the leaching
solution need to be determined according to mineral species, mineral composition, and chemical
composition. Generally, the alkaline sodium cyanide solution is used in the gold heap leaching.
5. Solution distribution and collection
The solution distribution is to evenly spray the leaching solution on the top surface of the ore heap, and
the solution distribution system is composed of a liquid distribution pool, pump, infusion pipe and spray
pipe and spray device laid on the ore heap.
Take spray as an example, the spray pipe network uses high-strength polyethylene plastic pipe, the spray
head uses the rotary swing sprinkler head with a wide spray radius, large and uniform spray droplets,
which is not easy to atomize, and convenient to install.
In the spraying process, one is to make the leaching solution evenly sprayed on the ore heap, another is
to achieve the required spraying intensity, that is, the amount of spraying per unit area in unit time,
usually 0.1-0.4L/m•min, the spraying time accounts for about 1/3 to 1/2 of the total time. After spraying,
the rich solution from the bottom of the heap enters the solution collecting tank through the solution
ditch and then is pumped to the workshop.
6. Rich solution (precious solution) processing
The gold is extracted by carbon adsorption and desorption electrolysis (or zinc dust replacement
precipitation). The activated carbon becomes the gold-loaded carbon due to the absorption of gold in the
pulp. After the completion of the adsorption operation, the gold carbon-containing pulp is sent to the
carbon screen through the air lifter to separate the pulp and activated carbon. After screening and
washing, the pulp is sent to desorption and electrolytic operation.
Under the high temperature and high pressure, the anions easily adsorbed by activated carbon are added
to the desorption system, and Au(CN)2- is replaced to obtain gold slime and carbon poor, so as to realize
the desorption of gold. The precious liquid obtained by desorption of gold-bearing carbon is recovered
by ionization to obtain the solid gold.
FINANCIAL REQUIREMENTS AND QUOTATIONS
NO. ITEM DESCRIPTION COST
1 Leach Profiling $ 2,100
2 Leach pad geo-membrane and
installations
$ 6,400
3 Leaching Reagent (Jin Chan) Reagent for leaching of 50,000
metric tons, including
transportation, taxes and
storage. This can be bought in
phases.
$ 124,000
4 Plant Plumbing, Construction and other
civil works
This activity includes putting
tanks, piping, Pregnant solution
barrels, Laboratory, Office and
living dwellings.
$ 23,000
5 Activated carbon, hydrated lime ,other
chemicals and laboratory equipment
$ 18,000
6 Acquisition of water from river to site (1
kilometre)
$ 10,000
7 Skilled labour Services of Metallurgist. This is
for initial facilitation, and more
fees will be paid during leaching
process.
$ 5,000
8 Un-skilled labour Stacking leach pile and handling
leaching operations. This is for
the first leaching cycle
$ 5,000
9 Site welfare Water, feeding and other
amenities
$ 5,000
10 Administrative costs Mineral processing license,
Environmental Impact
Assessment etc.
$ 10,000
11 Operational costs Fuels, Oils, Spares etc for the first
leaching cycle.
$ 15,000
12 Site mechanisation Water pump, generator, hire of
tipper or wheel loader where
required.
$ 20,000
13 Miscellaneous $ 5,000
TOTAL $ 248,500
PROJECT PROPOSAL NUMBER 59/2024
CLIENT Blitzen Ores Limited
Client Contact person Name: Timothy Obbo
Phone: +256781494411
Mobile: +256751084213
EMAIL: okunatimothy1982@gmail.com
Date of request : 16 April 2024
LEACH PROFILE TEST WORK TO DETERMINE PROCESS PARAMETERS AND
REAGENT OPTIMISATION ON LEACHING OF GOLD ORES
Prepared By NESCH MINTECH TANZANIA LTD
Date Submitted 16 April 2024
Prepared by Approved by
Name : Prosper Munemo Name : Happiness Nesvinga
Designation : Laboratory Manager Designation : COO
Cell : +255 769019049
Email : prosperm@neschmintec.com
Cell : +255 752357628
Email : info@neschmintec.com
NESCH MINTECH DISCLAIMER
Disclaimer: This proposal shall solely be for the above-mentioned client and Nesch Mintech absolves itself when the client decide to transmit this
proposal with whatever interpretation they give to other parties. Client is referred to the “Limitation of liability” on our website terms and conditions
accessible at http://www.neschmintec.com/terms-conditions/.
1
Dear client,
It is with pleasure that we take this opportunity to give a quote for your approval for Leach Profile
testwork for gold mineral samples.
Nesch Mintech Tanzania Limited is a privately-owned company set up to cover the gap that has been
existing in the mining sector where credibility and integrity of mineral test results has created a major
challenge in investment decision making for the mining industry. It is our conviction that we have taken
Tanzania and East Africa to international levels by being assessed and successfully accredited by the
SADCAS on ISO/IEC17025:2005-Minerals which demonstrate that we are technically proficient and
able to produce precise and accurate tests and analysis.
Nesch Mintech prides itself in providing quality analytical services at reasonable prices with
reasonable turnaround time of results. Based on seasonal fluctuation and workload at any given time
the turnaround time can however vary.
Thank you for this opportunity to quote and we look forward to being of service to you.
Yours sincerely
Prosper Munemo
2
TABLE OF CONTENTS
TABLE OF CONTENTS ...............................................................................................................................................2
1.0 INTRODUCTION ....................................................................................................................................................3
1.1 SAMPLE COLLECTION FROM SITE...................................................................................................................4
1.2 SAMPLE RECEIVING, LOGGING AND CONFIRMATION WITH CLIENT ........................................................4
2.0 CHEMICAL, PHYSICAL AND MINERALOGICAL CHARACTERISATION....................................................4
2.1 SAMPLE PREPARATION (DRYING, CRUSHING, SCREENING AND MILLING)..............................................4
2.2 GEOCHEMICAL ASSAYS....................................................................................................................................5
2.2.1 Fire assay .......................................................................................................................................................5
2.2.2 Multi-Element Analysis of Raw Ore (beneficial and deleterious components in the ores.) ..................................6
2.3 MINERALOGICAL AND PHYSICAL CHARACTERISATION.............................................................................6
2.4 INTENSIVE MINERALOGICAL TESTWORK .....................................................................................................6
3.0 PROCESS PARAMETERS AND OPTIMISATION...............................................................................................7
3.1 LEACHING METHODOLOGY.............................................................................................................................7
4.0 QUALITY ASSURANCE AND CONTROL............................................................................................................8
5.0 RESULTS AND REPORTING ................................................................................................................................9
6.0 SCHEDULE..............................................................................................................................................................9
7.0 SAMPLE STORAGE AND DISPOSAL...................................................................................................................9
8.0 COSTS AND COMMENCEMENT OF WORK....................................................................................................10
9.0 PAYMENT TERMS...............................................................................................................................................10
10.0 CONDITIONS OF ACCEPTANCE.....................................................................................................................11
3
1.0 INTRODUCTION
Timothy Obbo requested Nesch Mintech Tanzania LTD to give a quotation for a leach Profile
testwork complete with the optimum process parameters and indicators of chemical & optimum
processing technology in the most economical way for a dump material.
The tendered programme at this stage incorporates the following:
- Sample receiving, logging and confirmation with client
- Sample preparation (drying, crushing screening, milling)
- Leach profile testwork tests
- Preparation of report
This proposal details the test work and the associated costs. Below is a general technical summary
outline of the expected report.
ITEM DESCRIPTION UNITS
CHEMICAL AND PHYSICAL CHARACTERISATION
a Head assay bulk Au g/t
b Head assay bulk Cu g/t
c Head assay bulk Ag g/t
d Density (S.G) g/cm3
e Particle size distribution to determine % passing 75um %
DIAGNOSTIC LEACH TESTWORKS
f Au Available to direct cyanidation(no carbon) %
g Au Available to direct cyanidation(CIL) %
h Preg-robbed Au %
i Au liberated after mild oxidative pre -leach %
j Au liberated after severe oxidative pre -leach %
k Au undissolved (associated with quartz) %
LEACH TESTWORKS
l Au leach extraction determination of optimal % Solids on bulk %
m Optimal pH and cyanide for leaching
n Requirement for pre-oxidation(PbNO3) dosage test g/t
o Optimal carbon loading g/L
REAGENT CONSUMPTIONS
p NaCN consumption kg/t
q Lime Consumption kg/t
4
1.1 SAMPLE COLLECTION FROM SITE
Client is to submit samples to the Laboratory accompanied by a sample submission form, for samples
greater than 500 in number the client can request for transport from the laboratory at no extra cost and
should only provide proper documentation and client representative for ease of travel with the samples.
For samples outside of Tanzania the costs shall be discussed with the Laboratory for sample shipping
and custom clearance at the border.
1.2 SAMPLE RECEIVING, LOGGING AND CONFIRMATION WITH CLIENT
Once samples are received login of samples into the system shall be done at the Laboratory premises
in consultation with the client through email, phone call or face to face interaction.
Clients are to confirm test methods and elements to be tested before commencement of the test.
2.0 CHEMICAL, PHYSICAL AND MINERALOGICAL CHARACTERISATION
2.1 SAMPLE PREPARATION (DRYING, CRUSHING, SCREENING)
All received samples shall be dried to remove any accumulated moisture for assay tests however vat
leach samples maybe treated as received or as per client request
Fine crushing of assay sample to 70% -2mm. For samples with <80% passing 75um they shall be
crushed, pulverised as appropriate.
All received rocks shall be crushed up to 2mm and splitting shall be done using riffle splitter to get a
representative portion for further milling and assay for metallurgical testworks
- Since material is dump ore no further grinding will be done as per client request
Screen tests shall be done for the samples to ensure required size for specific assays.
A representative portion of the crushed bulk sample (approximately 50kg-100kg)/ submitted individual
samples will be blended using rifle splitter pulverised and analysed for Gold Carbon. The analysis shall
be done using the Fire assay method with AAS finish and other elements by XRF analysis.
5
2.2 GEOCHEMICAL ASSAYS
Geochemical testworks varies from Fire assay, Aqua Regia digestion, Carbon and Sulphur analysis,
XRF etc
2.2.1 Fire assay
Determination of gold shall be by Fire Assay with AAS finish method LM02, 25g to aliquots shall be
used. When there is need both for further assessment for Gold screen fire assay, screening and
separated fraction assay shall be done according to the standard appropriate method International сode-
Au-SCR24
Detection limit Au- 0.01ppm
For samples that require crushing, barren washing shall be done at the start of every batch and 1 in 20
samples shall be analysed for screen size passing,
Nesch Mintech expects to achieve a precision and accuracy of plus or minus 10% (of the concentration)
±1 Detection Limit (DL) for duplicate analyses, in-house standards and client submitted standards,
when conducting routine geochemical analyses for gold and base metals. For samples containing coarse
gold, native silver or copper, precision limits on duplicate analyses can exceed plus or minus 10% (of
the concentration).
Ore Grade Assays
For ore grade analysis, NESCH MINTECH expects to achieve a precision and accuracy of plus or minus
5% (of the concentration) ±1 DL for duplicate analyses, in-house standards and client submitted
standards. As in the case of routine geochemical analyses, samples containing native silver or copper
are less likely to meet the expected precision levels for ore grade analysis.
There shall be 1 reagent blank, 1CRM and 1 duplicate sample in every 20 samples analysed.
Nesch Mintech uses a data acceptance criteria where when a batch fails it is repeated as a whole with
no extra cost to the client.
6
2.2.2 Multi-Element Analysis of Raw Ore (beneficial and deleterious components in the ores.)
A representative sample shall be done to determine deleterious elements such as Arsenic, Sulphur, iron
antimony and copper. Multi element analysis shall be done using:
1. XRF
2. 32 multi element analysis with ICP finish
2.3 MINERALOGICAL AND PHYSICAL CHARACTERISATION
The characterisation programme will include the following procedures on raw ore characterization
measurements:
a) Mineralogical testwork by diagnostic leach tests. (please note Intensive mineral
testworks can also be done as per client request with extra costs)
b) Screen Analysis of Raw Ore(Particle size analysis: screen the ores into several different
particles and measure the content of each particle size and metal distribution rate of the
ores)
c) Density Measurement of Raw Ore
2.4 INTENSIVE MINERALOGICAL TESTWORK
Petrographic description (Detailed) of the head sample by XRD, optical microscopy, QEMSCAN
(Detailed Mineralogical Characterization) analysis (OPTIONAL)
The scope of work for Petrographic description and QEMSCAN will provide the following
deliverables:
 The presence of alteration / oxidation phases (if present) and the effect this may
have on processing
 The modal abundance of minerals in the samples particularly the amount of
deleterious phases such as clay minerals
 The deportment of P, which will quantify the various P-bearing minerals, and
provide data on their size, mineral association and liberation characteristics
 The data obtained above will be interpreted and conclusions put forward to
postulate the behaviour of the P-phases during beneficiation of the ore.
 Characteristics of non-metallic minerals
 Characteristics of metallic mineral
7
3.0 PROCESS PARAMETERS AND OPTIMISATION
3.1 LEACHING METHODOLOGY
The leach experiments shall be conducted in laboratory VAT leach tanks. Tests shall be carried out on
feed according to requested tests. Various samples of 200g, 1kg and 10 samples shall be prepared
depending on the tests required according to the test below.
Diagnostic Leach
Cyanide optimisation and Excess CN Leach
Particle size distribution assay
Effect of pre-oxidation and lead nitrate
Effect of pH
Effect of % Solids
Carbon Loading and Effect of preg-robbing
In the leaching testworks various parameters such
 Slurry Ph Value Test
 Reagent Type And Dosage Test
 Leaching Time, Etc.
Shall be investigated and in all cases concentrates and final product analysis will be done using Fire
assay method to monitor the behaviour of the valuable gold
8
4.0 QUALITY ASSURANCE AND CONTROL
Nesch Mintech follows a rigorous quality control programme monitored by SADCAS and has
accreditation of ISO/IEC 17025. The laboratory participates in proficiency testing programmes with
African Minerals Standards (AMIS) inorder to maintain and monitor quality control to eliminate errors
in results. The laboratory is a member of American society for Testing and Materials (ASTM) where
all methods for testing are adapted from.
The Laboratory Quality Control Program – is an essential aspect of ensuring that data released is fit for
the purpose determined by the quality objectives (i.e. accuracy and precision).
The programme is properly executed so that quality control samples can monitor the various aspects of
data quality on a routine basis. In instances where performance falls outside acceptable limits, the data
produced is questioned and, after investigation, a determination made as to its validity. Nesch Mintech
has professional experience and a common sense approach to quality control for ensuring that only
quality data is released. The dual foundations of the laboratory quality control program is its internal
quality control, composed of day-to-day and sample-set to sample-set monitoring of analytical
performance, and its external QC, based on the laboratory’s performance in proficiency testing
programs. The QC data generated is recorded in such a manner to detect trends.
QC schemes utilized for Nesch Mintech Laboratory consist of:
a) Reference material (CRMs) or Quality control samples
b) Use of alternative instrumentation that has been calibrated to provide traceable results;
c) Functional check(s) of measuring and testing equipment;
d) Use of check or working standards with control charts, where applicable;
e) Intermediate checks on measuring equipment;
f) Replicate and duplicate tests or calibrations using the same or different methods;
g) Retesting of retained items;
h) Correlation of results for different characteristics of an item;
j) Intra-laboratory and interlaboratory comparisons;
k) Testing of blind sample(s) and blanks.
l) Retained samples are subjected to repeat testing for a single sample in each batch of 50 samples after
every 1 month for 3 months to monitor the performance of the laboratory tests with time
9
m) Nesch Mintech laboratory monitors its performance by comparison with results of other laboratories,
where available and appropriate. This monitoring is planned and reviewed and include, but not limited
to, either or both of the following:
- Participation in proficiency testing and Participation in interlaboratory comparisons.
n) Data from monitoring activities shall be analysed, used to control and, if applicable, improve Nesch
Mintech laboratory’s activities. If the results of the analysis of data from monitoring activities are found
to be outside pre-defined criteria, appropriate action shall be taken to prevent incorrect results from
being reported.
o) Treatment of Outliers and Trends
5.0 RESULTS AND REPORTING
At the end of the test program, Nesch Mintech Tanzania metallurgical laboratory will provide the client
with a technical report summarizing all the work carried out and results obtained. Nesch Mintech as an
ISO/IEC 17025:2017 accredited Laboratory will produce a report that will be in accordance to NI 43/01,
SAMREC and JORC acceptable requirements.
Results of the test work will be processed and transmitted to the client via e-mail as soon as they become
available. The report shall be prepared after checking of the data acceptance criteria and a final
comprehensive report will be made available on completion of the project providing details of the test
procedures adopted and an interpretation of the results obtained.
The report shall be provided as Excel, Pdf or hardcopy as requested by client. The report shall by
dispatched through email, DHL or physical collection as required by client.
6.0 SCHEDULE
It is expected that for the vat leach testwork 7 days will be required after receiving the samples, payment
and order number.
7.0 SAMPLE STORAGE AND DISPOSAL
Samples shall be stored free of charge for a period of 30 days for rejects and solutions, 3 months for
pulps. After storage time elapses samples shall be disposed without communication to the client unless
if there is any instruction from the client and an arrangement with Nesch Mintech Tanzania Laboratory.
Disposal will be done in compliance to the laws of the Republic.
10
8.0 COSTS AND COMMENCEMENT OF WORK
Upon receiving and agreement on this proposal, the client should sign proposal acceptance page 11 and
sample receiving contract on submission of sample. Work will only commence once a client issues an
official order and payment has been received ON AN ISSUED INVOICE.
Metallurgical Testworks Quantity Price USD $ Price TZS
Phase 1
Sample preparation splitting and head assay 1 283.00 734,385.00
Chemical analysis, Physical characterisation 1 365.00 947,175.00
Leaching testwork (Reagent modelling and
optimisation) 1 995.00 2,582,025.00
Management (Report writing, data processing
and interpretation) 1 454.00 1,178,130.00
Total 2,097.00 5,441,715.00
Note: The above costs are for one sample and are exclusive of VAT. If it becomes payable in respect
of the services to be rendered in terms of this agreement, such amount shall be for the account of the
Client. The proposal is valid for 30 calendar days.
9.0 PAYMENT TERMS
Payment terms are advance payment. Payment can be made by direct deposit or internet transfer. See
below for details:
BANK DETAILS
Bank Stanbic Bank
Acc Holder Nesch Mintech Tanzania Ltd
Acc Number TZS 9120001455980
USD 9120001456014
SWIFT CODE: SBICTZTX
Branch Mwanza Tanzania
TIN NUMBER 123-332-296
VRN No: 40-026934-Z
Fax or e-mail proof of payment to: Email: info@neschmintec.com
11
10.0 CONDITIONS OF ACCEPTANCE
Please sign and return attached acceptance form with the Order No.
PROPOSAL NUMBER: 59/2024
LEACH PROFILE TEST WORK TO DETERMINE PROCESS PARAMETERS AND
REAGENT OPTIMISATION ON LEACHING OF GOLD ORES
Metallurgical Testworks Quantity Price USD $ Price TZS
Phase 1
Sample preparation splitting and head
assay 1 283.00 734,385.00
Chemical analysis, Physical
characterisation 1 365.00 947,175.00
Leaching testwork (Reagent modelling
and optimisation) 1 995.00 2,582,025.00
Management (Report writing, data
processing and interpretation) 1 454.00 1,178,130.00
Total 2,097.00 5,441,715.00
Accepted by:…..…………………………Date………………Designation…………………….
(please sign and stamp)
12
SAMPLE RECEIVING CONTRACT/AGREEMENT FOR SAMPLE PREPARATION
NMT/LSS/19
The agreement is entered between
……………………………………………..of…………………………………………….
And
HAPPINESS NESVINGA of NESCH MINETECH TANZANIA LTD.
On …………………………..
For the mentioned services as given below. Samples received shall be logged onto a form as stated
below bearing details of the company submitting the samples.
Name……………………………………..Company Name…………………………………………
Phone Number……………………………Email address…………………………………………...
NB: Please list the test required for each of your samples or attach your sample submission form
SAMPLE NAME SAMPLE TYPE TEST DESCRIPTION
The services for sample preparation shall include Drying Crushing, pulverization and packaging and
the laboratory sample code shall be given by Nesch Mintec Laboratory. The Terms and conditions for
sample preparation and analysis shall be as follows:
1. Kindly note that no samples shall be processed unless payment has been done
2. The test method is as stated on the table above
3. Tests are carried on As Received Samples and any anomaly is addressed as such
4. Customers are requested to collect their treated samples after 3 months failure of which they
will be disposed.
I ……………..of………………….……….Company agree to Submit the above sample(s) to Nesch
Mintec as recorded above and agree to the terms and conditions as stated above on
Sig……………………………………Date………………..
Received by ………………………………..Date.,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, (On behalf of Nesch Mintec
Lab)
Obtainedtheappraisalof
technicalachievement
certificateinDec.
JinchanEnvironmental-
friendlyGoldDressing
Agentwasofficially
launchedinApr.
Authorizedasnational
HighTechnology
companyinAug.
Weinvested0.23billon¥
tobuildnewproduction
basewith0.1millionton
peryearinDec.
Wonthefirstprizeof
technicalinventionof
NanninginDec.
ObtainedChinese
nationalpatentlicenses
inAug.
GotInnovationfundof
NanninginJune.
Startedpreparationfor
company’
slistingin
June.
Wegotthekey
constructionprojectof
theGuangxiprovincein
Feb.
SENHEHIGH-TECH
launchedatNEEQinSept.
Thefirststageof
productionprojection
officiallyputintoperation
inJune.
2019
Ourcompanyhas
passedISO9001
certificationinDec.
Ourcompanywas
awardedthe
“
excellentservice
prvider”
ingold
industry.
Recognizedas
Nanning
Accreditation
Enterprise
TechnologyCenter
inNovember2017.
Thesecondstageof
production
projectionofficially
putintooperation
inMay.
Ourcompanywas
awardedthe
“
excellentservice
provider”
ingold
industry.
Wesignedthe
majorstrategic
cooperation
agreementswith
Tsinghua
University,Central
SouthUniversity
andShandong
University,etc.,as
toplanthestrategy
oftechnological
breakthroughfor
thenextdecadeof
eco-friendlygold
extraction.
ShandongZhaojinGroup
andGuangxiBeibuGulf
HourunFundbecome
shareholdersofusin
Januaryandwewillcreate
collaborativevalueinthe
future.
WesubmittedIPO
applicationtoShenzhen
StockExchangeinJune
andwillusheringreater
development.
JIN CHAN - Patented Metallic Ore Dressing Agent
Instructions of JIN CHAN Metallic Ore Dressing Agent
I. Introduction to JIN CHAN
1. Scope of application:
① Applicable ore types: gold and silver ore, cyanidation slag, gold concentrate, pyrite cinder, lead and zinc
cinder, anode mud and other materials containing gold and silver.
② Applicable beneficiation process: dump leaching, pool leaching and CIP process, etc.
2. Product form: Granular or powder form.
3. Dissolution: It can be used after being fully dissolved in water by full stirring under normal temperature. The
concentration of this agent should be 10% to 20%.
4. pH value of pulp or solution: The pH value is usually adjusted with lime or caustic soda to 10.5 to 11.5.
5. Dosage:
① It is recommended to determine the agent consumption and concentration at the leaching rate under the
optimum conditions through the beneficiation test. The agent should be added according to test results during
production on site.
② For easy-to-leach ore, refer to the original dosing system for sodium cyanide.
6. Product use: in accordance with the conventional cyaniding process.
7. Others:
1 JIN CHAN has the best effects at the normal temperature, but it should not be used at a temperature below
10℃.
2. It is recommended to regularly test the gold content of pregnant and barren solution, as well as the pH value of
solution or pulp and JIN CHAN concentration.
3. Hydrogen peroxide, potassium permanganate and other strong oxidants are not recommended to be mixed
with JIN CHAN (pretreatment is allowed), to prevent the consumption of part of JNCHAN.
4. The use of ammonia, sodium sulfide, potassium ferricyanide, lead nitrate and other chemical agents in
complex ore pretreatment has little impact on JIN CHAN gold leaching.
5. A little of black insoluble slag generated after dissolution of JIN CHAN will not affect the reagent use.
6. JIN CHAN has no adverse impact on gold and silver leaching when mixed with sodium cyanide.
7. “Rich-oxygen leaching” in the CIP (carbon-in-pulp) process may have adverse impact on leaching with JIN
CHAN.
8. The unpacked or damaged reagent must be used up as soon as possible, in order to prevent failure due to
exposure to air.
II. Test of JIN CHAN concentration in leaching solution
1. Vessels and reagents: one 1,000ml brown glass flask, one 100ml brown dropping glass, one 100ml beaker,
one 25ml brown burette, one 10ml pipette, one suction bulb; propanone and distilled water.
2. Reagent preparation: (reagents shall be stored in brown glass bottles to avoid heat and light)
① Indicator: put a whole bottle of red reagent (sample A) into 100ml acetone solution, then shift it into 100ml
brown dropping glass, and keep this reagent sealed without exposure to light.
② Test reagent: put a whole bottle of white reagent (sample B) into 100ml distilled water till it is fully dissolved,
shift it into the 1,000ml brown glass flask, add distilled water to 1,000ml, shake the solution, and keep this reagent
sealed without exposure to light.
3. Operating steps:
1) Use the 10 ml pipette to adsorb 10ml JIN CHAN solution to be tested, put it into the 100ml conical flask, add
JIN CHAN - Patented Metallic Ore Dressing Agent
5 drops of indicator, and shake the solution up (till it turns yellow).
2) Carry out titration with the test agent via the brown burette, shake the bottle up while dropping. At the same
time, observe the color change until the solution turns from yellow to light red. Read the consumption V (ml)
of the test agent.
3) Calculation: JIN CHAN concentration (‰) = 0.33 × V
(Example: If the consumption of the test agent is 0.5ml, the JIN CHAN concentration of the solution under test
is 0.165‰.)
4. Precautions for product transportation, storage and use:
1. Main components of JIN CHAN series of environmentally friendly and efficient gold leaching agents include
carbonized sodium cyanate, alkaline thiourea, alkaline salt and other mixtures. It has been identified as an
environmentally friendly gold leaching agent by third-party test agencies, and can be used for extraction of gold,
silver and other precious metals.
2. This product must not be used for illegal exploitation of minerals or recycling of mineral resources and
precious metals without approvals of authorities.
3. This product has hygroscopicity, so it must be stored separately in a dry and ventilated room.
4. This product shall be used in neutral or alkaline aqueous solution and must not be mixed with acidic
chemicals.
5. This product shall not be in direct contact with people or animals during transportation, storage and use. In
case of accidental exposure, the skin shall be rinsed with running water.
6. The place where this product is used shall be ventilated. In addition, pulp, leaching solution, tail liquid and
slag must not be discharged out of the production system. Backwater shall be recycled, and slag shall be stacked in
the designated place.
The disposal measures and emission concentrations of wastewater and slag shall comply with relevant national and
industry standards or norms stipulated by the Ministry of Ecology and Environment or other competent departments
in charge of environmental supervision.
Please read this manual carefully and feel free to call and write for consultation. Our company has the right
of final interpretation!
Guangxi Senhe High Technology Co., Ltd.
HENAN BEST LINK IMPORT AND EXPORT TRADING CO.,LTD
NO.B2005-49,20F,XiCheng Sci.  Tech Building,41 JinSuoRoad, High-Tech Industrial Development Zone, ZhengZhou
Tel: +86-15639289697 Email:henanbestlink@hotmail.com
PROFORMA INVOICE
To:Blitzen Ores Limited
Address:Mombasa Port
Phone: Invoice No.:PI-UG-240504
E-mail:okunatimothy1982@gmail.com Date:May 04,2024
Attn:Timothy Okuna
Shipped from Guangxi,CHINA to Kampala, Uganda by sea.
Pos. Unit Description of Goods Qty/Weight Unit Price EXW Sub-total
01 Tons
METALLIC ORE DRESSING AGENT
HS:3824999999
45 $1,880.00 $84,600.00
Freight cost: $0.00
Invoice Total: $84,600.00
Delivery Period: 1-2 Weeks after receipt of order.
Delivery: EXW
Payment: 50% payment in advance, 50% payment before loading.
Customer MUST incur all charges if paying through bank.
Bank Infor.: Company Account:
Beneficiary:HENAN BEST LINK IMPORT AND EXPORT TRADING CO.,LTD
Account:1702021719200774440
Bank:Industrial And Commercial Bank of China,Zhengzhou BRANCH
Bank Add:NO.128 NANYANG ROAD,HUIJI DISTRICT,
ZHENGZHOU CITY,HENAN PROVINCE,CHINA
SWIFT:
Issued By:HENAN BEST LINK IMPORT AND EXPORT TRADING CO.,LTD
Signature:
1
Total KES650,000.00
Authorized Signature
: :
Account Number 01192836370200 Branch Cooperative Bank
;
Utawala Branch Branch Code 115 11000
Bank Code Swift Code
All
KCOOKENA Or : 400200 55735
Pay bill Acc No. Aqua-hub Kenya
cheques Address to : Aqua Hub Kenya Limited
+254790719020 |
info@aquahubkenya.co.ke |www.
aquahubkenya.co.ke
|P051700073Z
QUOTATION
Quote# : QT-AQH/00005052
Quote Date : 03 May 2024
Bill To
Blitzen Ores Limited
# Item  Description Qty Rate
Taxable
Amount VAT % VAT
1 Damliner 0,3mm 8x200 Metres
Dam size(50x50)
2,500 200.00 431,034.48 16.00 68,965.52
2 Welding and Installation 2,500 60.00 150,000.00 0.00 0.00
Sub Total KES581,034.48 68,965.52
2
Terms  Conditions
1. This quotation is subject to the availability of materials.
2. Prices may change without prior notice. 3. Goods remain the property of until fully paid for. 4.
Aqua Hub Kenya
All queries should be brought up with the respective salesperson you were being served by. 5. Quotation Valid for
7 days
For any installations, Note carefully the following: 1. Client to provide casuals as per the project. 2. Client to cater for
transport (for materials) food and accommodation for technician(s) where applicable 3. The client is responsible
for land preparation (excavation, ploughing, or demolishing of existing structures) before the commencement of
work and will provide electrical power at the site. 4. Any repeat of or continuation of installations after the
appointed day of work as a result of pending or incomplete land preparation by client will be charged extra
www.aquahubkenya.co.ke sales@aquahubkenya.co.ke
+254790719020

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Costs to heap leach gold ore tailings in Karamoja region of Uganda

  • 1. PROJECT FINANCIAL REQUIREMENTS TO HEAP LEACH 50,000 METRIC TONS OF GOLD ORE TAILINGS IN KARAMOJA (MORUITA) TO RECOVER AN ESTIMATED 90 KILOGRAMS OF GOLD
  • 2. EXECUTIVE SUMMARY The project is located in Nakapiripirit District in Uganda. Specifically in Moruita Sub-county, Acherer village. The intention is to heap leach 50,000 tons of gold rich tailings with an average yield of 1.8 – 2.5 grams per ton. This will yield approximately 90 kilograms of gold with a value of about $5,400,000. The project will be divided in phases of leaching cycles for cost management. Each leaching cycle will have 5,000 tons, with a target of 9-10 kilograms of gold. The financial requirements can be broken down into the leaching cycles. HEAP LEACHING Heap leaching is a process through which metals are extracted from the ore in which they are found. Heap leaching is often chosen for its efficiency and cost-effectiveness. As the need for resources increase, the heap leaching industry has risen to the occasion with advancements creating an even more efficient leach. One of which, is the process of agglomerating the ore prior to the leach. In gold extraction technologies, the gold heap leaching process flow has been widely used because of its simple process, low energy consumption, less equipment configuration, low capital construction investment, and production cost, which is especially suitable for treating low-grade gold ore. In production, the common gold heap leaching process flow mainly includes six stages: ore preparation, leaching pad construction, heap building, leaching solution preparation, solution distribution and collection, rich solution (precious solution) processing. 1. Ore preparation The ore preparation stage mainly includes crushing, granulation, and pretreatment operations, whose purpose is to improve the ore leachability and leaching pile permeability, avoid liquid flow irregularity,
  • 3. blockage, ditch flow, and other phenomena, improve the recovery rate of gold ore and reduce the consumption of leaching solution. Crushing Different crushing processes are carried out according to the ore properties and technological requirements. The waste ore generally doesn’t need crushing (30%), the ore particle size after two-stage crushing is 30-50mm (53%), and the ore particle size after three-stage crushing is 9-19mm (17%). It has been proved that crushing is one of the key technical links to ensure the good permeability of ore and improve the leaching rate of gold ore. Granulation The granulation is required first for the fine ore and high clay containing ore. Adding a certain amount (3-6kg/t) of cement and lime adhesive to the ore, then adding an appropriate amount of sodium cyanide solution, keeping the ore 8-12% of humidity, curing 8-12h, thus forming the ore group. The granulation treatment improves the permeability of the ore heap, keeps the sufficient oxygen supply, dissolves the gold by cyanide in advance, and greatly improves the gold leaching rate. This process often uses a cylinder granulator, disc granulator, multi-section belt granulator. Among them, the belt granulator can directly send the fine ore after the granulation to the heap leaching field, while the cylinder granulator is especially suitable for the high clay-containing ore. Pre-treatment In the granulation process, sometimes it is necessary to add a leaching solution to pretreat the ore, whose purpose is to improve the permeability of the leaching heap and the leaching rate of useful components of the ore. 2. Leaching pad construction In order to collect the rich liquid and prevent the leakage of the solution, the bottom of the yard should be repaired and bedding before the heap building. The materials used in the construction of the leaching pads are clay, sand, gravel, asphalt, reinforced concrete, plastic film, or rubber plastic plate. Depending on the different materials, the thickness of the cushion layer is generally 300-600mm. The longitudinal and transverse drainage ditches are paved with block ore in the cushion layer, and then a layer of large ore is laid on the whole bottom plate to protect the bottom pad. 3. Heap building The purpose of heap building is to make the ore pile have good and uniform permeability, and ensure that the slope will not collapse. The height of the ore heap mainly depends on the permeability of the ore heap, the content of the leaching agent in the leaching solution, the equipment, and the method used in heap building. Generally, the heap height is 3-9m, and the heap of raw ore can be as high as 46m. There are many ways to build the heap, such as the multi-heap method, multi-layer method, slope method. Most of the gold heap leaching plants often use cars, front-end loaders, bulldozers to unload ore to build the heap, and timely loosen the heap. 4. Leaching solution preparation The leaching solution used for leaching the useful components from gold ore is prepared with water and leaching agent according to a certain formula. The common leaching agents include sulfuric acid, nitric acid, hydrochloric acid, sodium carbonate, sodium bicarbonate, ammonium carbonate, ammonium
  • 4. bicarbonate, ferric sulfate, chloride, sodium iodide, potassium iodide, ammonium sulfate, air, oxygen, permanganate, nitrogen oxides, hydrogen peroxide, and chlorate. The formula and dosage of the leaching solution need to be determined according to mineral species, mineral composition, and chemical composition. Generally, the alkaline sodium cyanide solution is used in the gold heap leaching. 5. Solution distribution and collection The solution distribution is to evenly spray the leaching solution on the top surface of the ore heap, and the solution distribution system is composed of a liquid distribution pool, pump, infusion pipe and spray pipe and spray device laid on the ore heap. Take spray as an example, the spray pipe network uses high-strength polyethylene plastic pipe, the spray head uses the rotary swing sprinkler head with a wide spray radius, large and uniform spray droplets, which is not easy to atomize, and convenient to install. In the spraying process, one is to make the leaching solution evenly sprayed on the ore heap, another is to achieve the required spraying intensity, that is, the amount of spraying per unit area in unit time, usually 0.1-0.4L/m•min, the spraying time accounts for about 1/3 to 1/2 of the total time. After spraying, the rich solution from the bottom of the heap enters the solution collecting tank through the solution ditch and then is pumped to the workshop. 6. Rich solution (precious solution) processing The gold is extracted by carbon adsorption and desorption electrolysis (or zinc dust replacement precipitation). The activated carbon becomes the gold-loaded carbon due to the absorption of gold in the pulp. After the completion of the adsorption operation, the gold carbon-containing pulp is sent to the carbon screen through the air lifter to separate the pulp and activated carbon. After screening and washing, the pulp is sent to desorption and electrolytic operation. Under the high temperature and high pressure, the anions easily adsorbed by activated carbon are added to the desorption system, and Au(CN)2- is replaced to obtain gold slime and carbon poor, so as to realize the desorption of gold. The precious liquid obtained by desorption of gold-bearing carbon is recovered by ionization to obtain the solid gold.
  • 5. FINANCIAL REQUIREMENTS AND QUOTATIONS NO. ITEM DESCRIPTION COST 1 Leach Profiling $ 2,100 2 Leach pad geo-membrane and installations $ 6,400 3 Leaching Reagent (Jin Chan) Reagent for leaching of 50,000 metric tons, including transportation, taxes and storage. This can be bought in phases. $ 124,000 4 Plant Plumbing, Construction and other civil works This activity includes putting tanks, piping, Pregnant solution barrels, Laboratory, Office and living dwellings. $ 23,000 5 Activated carbon, hydrated lime ,other chemicals and laboratory equipment $ 18,000 6 Acquisition of water from river to site (1 kilometre) $ 10,000 7 Skilled labour Services of Metallurgist. This is for initial facilitation, and more fees will be paid during leaching process. $ 5,000 8 Un-skilled labour Stacking leach pile and handling leaching operations. This is for the first leaching cycle $ 5,000 9 Site welfare Water, feeding and other amenities $ 5,000 10 Administrative costs Mineral processing license, Environmental Impact Assessment etc. $ 10,000 11 Operational costs Fuels, Oils, Spares etc for the first leaching cycle. $ 15,000 12 Site mechanisation Water pump, generator, hire of tipper or wheel loader where required. $ 20,000 13 Miscellaneous $ 5,000 TOTAL $ 248,500
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  • 7. PROJECT PROPOSAL NUMBER 59/2024 CLIENT Blitzen Ores Limited Client Contact person Name: Timothy Obbo Phone: +256781494411 Mobile: +256751084213 EMAIL: okunatimothy1982@gmail.com Date of request : 16 April 2024 LEACH PROFILE TEST WORK TO DETERMINE PROCESS PARAMETERS AND REAGENT OPTIMISATION ON LEACHING OF GOLD ORES Prepared By NESCH MINTECH TANZANIA LTD Date Submitted 16 April 2024 Prepared by Approved by Name : Prosper Munemo Name : Happiness Nesvinga Designation : Laboratory Manager Designation : COO Cell : +255 769019049 Email : prosperm@neschmintec.com Cell : +255 752357628 Email : info@neschmintec.com NESCH MINTECH DISCLAIMER Disclaimer: This proposal shall solely be for the above-mentioned client and Nesch Mintech absolves itself when the client decide to transmit this proposal with whatever interpretation they give to other parties. Client is referred to the “Limitation of liability” on our website terms and conditions accessible at http://www.neschmintec.com/terms-conditions/.
  • 8. 1 Dear client, It is with pleasure that we take this opportunity to give a quote for your approval for Leach Profile testwork for gold mineral samples. Nesch Mintech Tanzania Limited is a privately-owned company set up to cover the gap that has been existing in the mining sector where credibility and integrity of mineral test results has created a major challenge in investment decision making for the mining industry. It is our conviction that we have taken Tanzania and East Africa to international levels by being assessed and successfully accredited by the SADCAS on ISO/IEC17025:2005-Minerals which demonstrate that we are technically proficient and able to produce precise and accurate tests and analysis. Nesch Mintech prides itself in providing quality analytical services at reasonable prices with reasonable turnaround time of results. Based on seasonal fluctuation and workload at any given time the turnaround time can however vary. Thank you for this opportunity to quote and we look forward to being of service to you. Yours sincerely Prosper Munemo
  • 9. 2 TABLE OF CONTENTS TABLE OF CONTENTS ...............................................................................................................................................2 1.0 INTRODUCTION ....................................................................................................................................................3 1.1 SAMPLE COLLECTION FROM SITE...................................................................................................................4 1.2 SAMPLE RECEIVING, LOGGING AND CONFIRMATION WITH CLIENT ........................................................4 2.0 CHEMICAL, PHYSICAL AND MINERALOGICAL CHARACTERISATION....................................................4 2.1 SAMPLE PREPARATION (DRYING, CRUSHING, SCREENING AND MILLING)..............................................4 2.2 GEOCHEMICAL ASSAYS....................................................................................................................................5 2.2.1 Fire assay .......................................................................................................................................................5 2.2.2 Multi-Element Analysis of Raw Ore (beneficial and deleterious components in the ores.) ..................................6 2.3 MINERALOGICAL AND PHYSICAL CHARACTERISATION.............................................................................6 2.4 INTENSIVE MINERALOGICAL TESTWORK .....................................................................................................6 3.0 PROCESS PARAMETERS AND OPTIMISATION...............................................................................................7 3.1 LEACHING METHODOLOGY.............................................................................................................................7 4.0 QUALITY ASSURANCE AND CONTROL............................................................................................................8 5.0 RESULTS AND REPORTING ................................................................................................................................9 6.0 SCHEDULE..............................................................................................................................................................9 7.0 SAMPLE STORAGE AND DISPOSAL...................................................................................................................9 8.0 COSTS AND COMMENCEMENT OF WORK....................................................................................................10 9.0 PAYMENT TERMS...............................................................................................................................................10 10.0 CONDITIONS OF ACCEPTANCE.....................................................................................................................11
  • 10. 3 1.0 INTRODUCTION Timothy Obbo requested Nesch Mintech Tanzania LTD to give a quotation for a leach Profile testwork complete with the optimum process parameters and indicators of chemical & optimum processing technology in the most economical way for a dump material. The tendered programme at this stage incorporates the following: - Sample receiving, logging and confirmation with client - Sample preparation (drying, crushing screening, milling) - Leach profile testwork tests - Preparation of report This proposal details the test work and the associated costs. Below is a general technical summary outline of the expected report. ITEM DESCRIPTION UNITS CHEMICAL AND PHYSICAL CHARACTERISATION a Head assay bulk Au g/t b Head assay bulk Cu g/t c Head assay bulk Ag g/t d Density (S.G) g/cm3 e Particle size distribution to determine % passing 75um % DIAGNOSTIC LEACH TESTWORKS f Au Available to direct cyanidation(no carbon) % g Au Available to direct cyanidation(CIL) % h Preg-robbed Au % i Au liberated after mild oxidative pre -leach % j Au liberated after severe oxidative pre -leach % k Au undissolved (associated with quartz) % LEACH TESTWORKS l Au leach extraction determination of optimal % Solids on bulk % m Optimal pH and cyanide for leaching n Requirement for pre-oxidation(PbNO3) dosage test g/t o Optimal carbon loading g/L REAGENT CONSUMPTIONS p NaCN consumption kg/t q Lime Consumption kg/t
  • 11. 4 1.1 SAMPLE COLLECTION FROM SITE Client is to submit samples to the Laboratory accompanied by a sample submission form, for samples greater than 500 in number the client can request for transport from the laboratory at no extra cost and should only provide proper documentation and client representative for ease of travel with the samples. For samples outside of Tanzania the costs shall be discussed with the Laboratory for sample shipping and custom clearance at the border. 1.2 SAMPLE RECEIVING, LOGGING AND CONFIRMATION WITH CLIENT Once samples are received login of samples into the system shall be done at the Laboratory premises in consultation with the client through email, phone call or face to face interaction. Clients are to confirm test methods and elements to be tested before commencement of the test. 2.0 CHEMICAL, PHYSICAL AND MINERALOGICAL CHARACTERISATION 2.1 SAMPLE PREPARATION (DRYING, CRUSHING, SCREENING) All received samples shall be dried to remove any accumulated moisture for assay tests however vat leach samples maybe treated as received or as per client request Fine crushing of assay sample to 70% -2mm. For samples with <80% passing 75um they shall be crushed, pulverised as appropriate. All received rocks shall be crushed up to 2mm and splitting shall be done using riffle splitter to get a representative portion for further milling and assay for metallurgical testworks - Since material is dump ore no further grinding will be done as per client request Screen tests shall be done for the samples to ensure required size for specific assays. A representative portion of the crushed bulk sample (approximately 50kg-100kg)/ submitted individual samples will be blended using rifle splitter pulverised and analysed for Gold Carbon. The analysis shall be done using the Fire assay method with AAS finish and other elements by XRF analysis.
  • 12. 5 2.2 GEOCHEMICAL ASSAYS Geochemical testworks varies from Fire assay, Aqua Regia digestion, Carbon and Sulphur analysis, XRF etc 2.2.1 Fire assay Determination of gold shall be by Fire Assay with AAS finish method LM02, 25g to aliquots shall be used. When there is need both for further assessment for Gold screen fire assay, screening and separated fraction assay shall be done according to the standard appropriate method International сode- Au-SCR24 Detection limit Au- 0.01ppm For samples that require crushing, barren washing shall be done at the start of every batch and 1 in 20 samples shall be analysed for screen size passing, Nesch Mintech expects to achieve a precision and accuracy of plus or minus 10% (of the concentration) ±1 Detection Limit (DL) for duplicate analyses, in-house standards and client submitted standards, when conducting routine geochemical analyses for gold and base metals. For samples containing coarse gold, native silver or copper, precision limits on duplicate analyses can exceed plus or minus 10% (of the concentration). Ore Grade Assays For ore grade analysis, NESCH MINTECH expects to achieve a precision and accuracy of plus or minus 5% (of the concentration) ±1 DL for duplicate analyses, in-house standards and client submitted standards. As in the case of routine geochemical analyses, samples containing native silver or copper are less likely to meet the expected precision levels for ore grade analysis. There shall be 1 reagent blank, 1CRM and 1 duplicate sample in every 20 samples analysed. Nesch Mintech uses a data acceptance criteria where when a batch fails it is repeated as a whole with no extra cost to the client.
  • 13. 6 2.2.2 Multi-Element Analysis of Raw Ore (beneficial and deleterious components in the ores.) A representative sample shall be done to determine deleterious elements such as Arsenic, Sulphur, iron antimony and copper. Multi element analysis shall be done using: 1. XRF 2. 32 multi element analysis with ICP finish 2.3 MINERALOGICAL AND PHYSICAL CHARACTERISATION The characterisation programme will include the following procedures on raw ore characterization measurements: a) Mineralogical testwork by diagnostic leach tests. (please note Intensive mineral testworks can also be done as per client request with extra costs) b) Screen Analysis of Raw Ore(Particle size analysis: screen the ores into several different particles and measure the content of each particle size and metal distribution rate of the ores) c) Density Measurement of Raw Ore 2.4 INTENSIVE MINERALOGICAL TESTWORK Petrographic description (Detailed) of the head sample by XRD, optical microscopy, QEMSCAN (Detailed Mineralogical Characterization) analysis (OPTIONAL) The scope of work for Petrographic description and QEMSCAN will provide the following deliverables:  The presence of alteration / oxidation phases (if present) and the effect this may have on processing  The modal abundance of minerals in the samples particularly the amount of deleterious phases such as clay minerals  The deportment of P, which will quantify the various P-bearing minerals, and provide data on their size, mineral association and liberation characteristics  The data obtained above will be interpreted and conclusions put forward to postulate the behaviour of the P-phases during beneficiation of the ore.  Characteristics of non-metallic minerals  Characteristics of metallic mineral
  • 14. 7 3.0 PROCESS PARAMETERS AND OPTIMISATION 3.1 LEACHING METHODOLOGY The leach experiments shall be conducted in laboratory VAT leach tanks. Tests shall be carried out on feed according to requested tests. Various samples of 200g, 1kg and 10 samples shall be prepared depending on the tests required according to the test below. Diagnostic Leach Cyanide optimisation and Excess CN Leach Particle size distribution assay Effect of pre-oxidation and lead nitrate Effect of pH Effect of % Solids Carbon Loading and Effect of preg-robbing In the leaching testworks various parameters such  Slurry Ph Value Test  Reagent Type And Dosage Test  Leaching Time, Etc. Shall be investigated and in all cases concentrates and final product analysis will be done using Fire assay method to monitor the behaviour of the valuable gold
  • 15. 8 4.0 QUALITY ASSURANCE AND CONTROL Nesch Mintech follows a rigorous quality control programme monitored by SADCAS and has accreditation of ISO/IEC 17025. The laboratory participates in proficiency testing programmes with African Minerals Standards (AMIS) inorder to maintain and monitor quality control to eliminate errors in results. The laboratory is a member of American society for Testing and Materials (ASTM) where all methods for testing are adapted from. The Laboratory Quality Control Program – is an essential aspect of ensuring that data released is fit for the purpose determined by the quality objectives (i.e. accuracy and precision). The programme is properly executed so that quality control samples can monitor the various aspects of data quality on a routine basis. In instances where performance falls outside acceptable limits, the data produced is questioned and, after investigation, a determination made as to its validity. Nesch Mintech has professional experience and a common sense approach to quality control for ensuring that only quality data is released. The dual foundations of the laboratory quality control program is its internal quality control, composed of day-to-day and sample-set to sample-set monitoring of analytical performance, and its external QC, based on the laboratory’s performance in proficiency testing programs. The QC data generated is recorded in such a manner to detect trends. QC schemes utilized for Nesch Mintech Laboratory consist of: a) Reference material (CRMs) or Quality control samples b) Use of alternative instrumentation that has been calibrated to provide traceable results; c) Functional check(s) of measuring and testing equipment; d) Use of check or working standards with control charts, where applicable; e) Intermediate checks on measuring equipment; f) Replicate and duplicate tests or calibrations using the same or different methods; g) Retesting of retained items; h) Correlation of results for different characteristics of an item; j) Intra-laboratory and interlaboratory comparisons; k) Testing of blind sample(s) and blanks. l) Retained samples are subjected to repeat testing for a single sample in each batch of 50 samples after every 1 month for 3 months to monitor the performance of the laboratory tests with time
  • 16. 9 m) Nesch Mintech laboratory monitors its performance by comparison with results of other laboratories, where available and appropriate. This monitoring is planned and reviewed and include, but not limited to, either or both of the following: - Participation in proficiency testing and Participation in interlaboratory comparisons. n) Data from monitoring activities shall be analysed, used to control and, if applicable, improve Nesch Mintech laboratory’s activities. If the results of the analysis of data from monitoring activities are found to be outside pre-defined criteria, appropriate action shall be taken to prevent incorrect results from being reported. o) Treatment of Outliers and Trends 5.0 RESULTS AND REPORTING At the end of the test program, Nesch Mintech Tanzania metallurgical laboratory will provide the client with a technical report summarizing all the work carried out and results obtained. Nesch Mintech as an ISO/IEC 17025:2017 accredited Laboratory will produce a report that will be in accordance to NI 43/01, SAMREC and JORC acceptable requirements. Results of the test work will be processed and transmitted to the client via e-mail as soon as they become available. The report shall be prepared after checking of the data acceptance criteria and a final comprehensive report will be made available on completion of the project providing details of the test procedures adopted and an interpretation of the results obtained. The report shall be provided as Excel, Pdf or hardcopy as requested by client. The report shall by dispatched through email, DHL or physical collection as required by client. 6.0 SCHEDULE It is expected that for the vat leach testwork 7 days will be required after receiving the samples, payment and order number. 7.0 SAMPLE STORAGE AND DISPOSAL Samples shall be stored free of charge for a period of 30 days for rejects and solutions, 3 months for pulps. After storage time elapses samples shall be disposed without communication to the client unless if there is any instruction from the client and an arrangement with Nesch Mintech Tanzania Laboratory. Disposal will be done in compliance to the laws of the Republic.
  • 17. 10 8.0 COSTS AND COMMENCEMENT OF WORK Upon receiving and agreement on this proposal, the client should sign proposal acceptance page 11 and sample receiving contract on submission of sample. Work will only commence once a client issues an official order and payment has been received ON AN ISSUED INVOICE. Metallurgical Testworks Quantity Price USD $ Price TZS Phase 1 Sample preparation splitting and head assay 1 283.00 734,385.00 Chemical analysis, Physical characterisation 1 365.00 947,175.00 Leaching testwork (Reagent modelling and optimisation) 1 995.00 2,582,025.00 Management (Report writing, data processing and interpretation) 1 454.00 1,178,130.00 Total 2,097.00 5,441,715.00 Note: The above costs are for one sample and are exclusive of VAT. If it becomes payable in respect of the services to be rendered in terms of this agreement, such amount shall be for the account of the Client. The proposal is valid for 30 calendar days. 9.0 PAYMENT TERMS Payment terms are advance payment. Payment can be made by direct deposit or internet transfer. See below for details: BANK DETAILS Bank Stanbic Bank Acc Holder Nesch Mintech Tanzania Ltd Acc Number TZS 9120001455980 USD 9120001456014 SWIFT CODE: SBICTZTX Branch Mwanza Tanzania TIN NUMBER 123-332-296 VRN No: 40-026934-Z Fax or e-mail proof of payment to: Email: info@neschmintec.com
  • 18. 11 10.0 CONDITIONS OF ACCEPTANCE Please sign and return attached acceptance form with the Order No. PROPOSAL NUMBER: 59/2024 LEACH PROFILE TEST WORK TO DETERMINE PROCESS PARAMETERS AND REAGENT OPTIMISATION ON LEACHING OF GOLD ORES Metallurgical Testworks Quantity Price USD $ Price TZS Phase 1 Sample preparation splitting and head assay 1 283.00 734,385.00 Chemical analysis, Physical characterisation 1 365.00 947,175.00 Leaching testwork (Reagent modelling and optimisation) 1 995.00 2,582,025.00 Management (Report writing, data processing and interpretation) 1 454.00 1,178,130.00 Total 2,097.00 5,441,715.00 Accepted by:…..…………………………Date………………Designation……………………. (please sign and stamp)
  • 19. 12 SAMPLE RECEIVING CONTRACT/AGREEMENT FOR SAMPLE PREPARATION NMT/LSS/19 The agreement is entered between ……………………………………………..of……………………………………………. And HAPPINESS NESVINGA of NESCH MINETECH TANZANIA LTD. On ………………………….. For the mentioned services as given below. Samples received shall be logged onto a form as stated below bearing details of the company submitting the samples. Name……………………………………..Company Name………………………………………… Phone Number……………………………Email address…………………………………………... NB: Please list the test required for each of your samples or attach your sample submission form SAMPLE NAME SAMPLE TYPE TEST DESCRIPTION The services for sample preparation shall include Drying Crushing, pulverization and packaging and the laboratory sample code shall be given by Nesch Mintec Laboratory. The Terms and conditions for sample preparation and analysis shall be as follows: 1. Kindly note that no samples shall be processed unless payment has been done 2. The test method is as stated on the table above 3. Tests are carried on As Received Samples and any anomaly is addressed as such 4. Customers are requested to collect their treated samples after 3 months failure of which they will be disposed. I ……………..of………………….……….Company agree to Submit the above sample(s) to Nesch Mintec as recorded above and agree to the terms and conditions as stated above on Sig……………………………………Date……………….. Received by ………………………………..Date.,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, (On behalf of Nesch Mintec Lab)
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  • 29. Obtainedtheappraisalof technicalachievement certificateinDec. JinchanEnvironmental- friendlyGoldDressing Agentwasofficially launchedinApr. Authorizedasnational HighTechnology companyinAug. Weinvested0.23billon¥ tobuildnewproduction basewith0.1millionton peryearinDec. Wonthefirstprizeof technicalinventionof NanninginDec. ObtainedChinese nationalpatentlicenses inAug. GotInnovationfundof NanninginJune. Startedpreparationfor company’ slistingin June. Wegotthekey constructionprojectof theGuangxiprovincein Feb. SENHEHIGH-TECH launchedatNEEQinSept. Thefirststageof productionprojection officiallyputintoperation inJune. 2019 Ourcompanyhas passedISO9001 certificationinDec. Ourcompanywas awardedthe “ excellentservice prvider” ingold industry. Recognizedas Nanning Accreditation Enterprise TechnologyCenter inNovember2017. Thesecondstageof production projectionofficially putintooperation inMay. Ourcompanywas awardedthe “ excellentservice provider” ingold industry. Wesignedthe majorstrategic cooperation agreementswith Tsinghua University,Central SouthUniversity andShandong University,etc.,as toplanthestrategy oftechnological breakthroughfor thenextdecadeof eco-friendlygold extraction. ShandongZhaojinGroup andGuangxiBeibuGulf HourunFundbecome shareholdersofusin Januaryandwewillcreate collaborativevalueinthe future. WesubmittedIPO applicationtoShenzhen StockExchangeinJune andwillusheringreater development.
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  • 32. JIN CHAN - Patented Metallic Ore Dressing Agent Instructions of JIN CHAN Metallic Ore Dressing Agent I. Introduction to JIN CHAN 1. Scope of application: ① Applicable ore types: gold and silver ore, cyanidation slag, gold concentrate, pyrite cinder, lead and zinc cinder, anode mud and other materials containing gold and silver. ② Applicable beneficiation process: dump leaching, pool leaching and CIP process, etc. 2. Product form: Granular or powder form. 3. Dissolution: It can be used after being fully dissolved in water by full stirring under normal temperature. The concentration of this agent should be 10% to 20%. 4. pH value of pulp or solution: The pH value is usually adjusted with lime or caustic soda to 10.5 to 11.5. 5. Dosage: ① It is recommended to determine the agent consumption and concentration at the leaching rate under the optimum conditions through the beneficiation test. The agent should be added according to test results during production on site. ② For easy-to-leach ore, refer to the original dosing system for sodium cyanide. 6. Product use: in accordance with the conventional cyaniding process. 7. Others: 1 JIN CHAN has the best effects at the normal temperature, but it should not be used at a temperature below 10℃. 2. It is recommended to regularly test the gold content of pregnant and barren solution, as well as the pH value of solution or pulp and JIN CHAN concentration. 3. Hydrogen peroxide, potassium permanganate and other strong oxidants are not recommended to be mixed with JIN CHAN (pretreatment is allowed), to prevent the consumption of part of JNCHAN. 4. The use of ammonia, sodium sulfide, potassium ferricyanide, lead nitrate and other chemical agents in complex ore pretreatment has little impact on JIN CHAN gold leaching. 5. A little of black insoluble slag generated after dissolution of JIN CHAN will not affect the reagent use. 6. JIN CHAN has no adverse impact on gold and silver leaching when mixed with sodium cyanide. 7. “Rich-oxygen leaching” in the CIP (carbon-in-pulp) process may have adverse impact on leaching with JIN CHAN. 8. The unpacked or damaged reagent must be used up as soon as possible, in order to prevent failure due to exposure to air. II. Test of JIN CHAN concentration in leaching solution 1. Vessels and reagents: one 1,000ml brown glass flask, one 100ml brown dropping glass, one 100ml beaker, one 25ml brown burette, one 10ml pipette, one suction bulb; propanone and distilled water. 2. Reagent preparation: (reagents shall be stored in brown glass bottles to avoid heat and light) ① Indicator: put a whole bottle of red reagent (sample A) into 100ml acetone solution, then shift it into 100ml brown dropping glass, and keep this reagent sealed without exposure to light. ② Test reagent: put a whole bottle of white reagent (sample B) into 100ml distilled water till it is fully dissolved, shift it into the 1,000ml brown glass flask, add distilled water to 1,000ml, shake the solution, and keep this reagent sealed without exposure to light. 3. Operating steps: 1) Use the 10 ml pipette to adsorb 10ml JIN CHAN solution to be tested, put it into the 100ml conical flask, add
  • 33. JIN CHAN - Patented Metallic Ore Dressing Agent 5 drops of indicator, and shake the solution up (till it turns yellow). 2) Carry out titration with the test agent via the brown burette, shake the bottle up while dropping. At the same time, observe the color change until the solution turns from yellow to light red. Read the consumption V (ml) of the test agent. 3) Calculation: JIN CHAN concentration (‰) = 0.33 × V (Example: If the consumption of the test agent is 0.5ml, the JIN CHAN concentration of the solution under test is 0.165‰.) 4. Precautions for product transportation, storage and use: 1. Main components of JIN CHAN series of environmentally friendly and efficient gold leaching agents include carbonized sodium cyanate, alkaline thiourea, alkaline salt and other mixtures. It has been identified as an environmentally friendly gold leaching agent by third-party test agencies, and can be used for extraction of gold, silver and other precious metals. 2. This product must not be used for illegal exploitation of minerals or recycling of mineral resources and precious metals without approvals of authorities. 3. This product has hygroscopicity, so it must be stored separately in a dry and ventilated room. 4. This product shall be used in neutral or alkaline aqueous solution and must not be mixed with acidic chemicals. 5. This product shall not be in direct contact with people or animals during transportation, storage and use. In case of accidental exposure, the skin shall be rinsed with running water. 6. The place where this product is used shall be ventilated. In addition, pulp, leaching solution, tail liquid and slag must not be discharged out of the production system. Backwater shall be recycled, and slag shall be stacked in the designated place. The disposal measures and emission concentrations of wastewater and slag shall comply with relevant national and industry standards or norms stipulated by the Ministry of Ecology and Environment or other competent departments in charge of environmental supervision. Please read this manual carefully and feel free to call and write for consultation. Our company has the right of final interpretation! Guangxi Senhe High Technology Co., Ltd.
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  • 45. HENAN BEST LINK IMPORT AND EXPORT TRADING CO.,LTD NO.B2005-49,20F,XiCheng Sci. Tech Building,41 JinSuoRoad, High-Tech Industrial Development Zone, ZhengZhou Tel: +86-15639289697 Email:henanbestlink@hotmail.com PROFORMA INVOICE To:Blitzen Ores Limited Address:Mombasa Port Phone: Invoice No.:PI-UG-240504 E-mail:okunatimothy1982@gmail.com Date:May 04,2024 Attn:Timothy Okuna Shipped from Guangxi,CHINA to Kampala, Uganda by sea. Pos. Unit Description of Goods Qty/Weight Unit Price EXW Sub-total 01 Tons METALLIC ORE DRESSING AGENT HS:3824999999 45 $1,880.00 $84,600.00 Freight cost: $0.00 Invoice Total: $84,600.00 Delivery Period: 1-2 Weeks after receipt of order. Delivery: EXW Payment: 50% payment in advance, 50% payment before loading. Customer MUST incur all charges if paying through bank. Bank Infor.: Company Account: Beneficiary:HENAN BEST LINK IMPORT AND EXPORT TRADING CO.,LTD Account:1702021719200774440 Bank:Industrial And Commercial Bank of China,Zhengzhou BRANCH Bank Add:NO.128 NANYANG ROAD,HUIJI DISTRICT, ZHENGZHOU CITY,HENAN PROVINCE,CHINA SWIFT: Issued By:HENAN BEST LINK IMPORT AND EXPORT TRADING CO.,LTD Signature:
  • 46. 1 Total KES650,000.00 Authorized Signature : : Account Number 01192836370200 Branch Cooperative Bank ; Utawala Branch Branch Code 115 11000 Bank Code Swift Code All KCOOKENA Or : 400200 55735 Pay bill Acc No. Aqua-hub Kenya cheques Address to : Aqua Hub Kenya Limited +254790719020 | info@aquahubkenya.co.ke |www. aquahubkenya.co.ke |P051700073Z QUOTATION Quote# : QT-AQH/00005052 Quote Date : 03 May 2024 Bill To Blitzen Ores Limited # Item Description Qty Rate Taxable Amount VAT % VAT 1 Damliner 0,3mm 8x200 Metres Dam size(50x50) 2,500 200.00 431,034.48 16.00 68,965.52 2 Welding and Installation 2,500 60.00 150,000.00 0.00 0.00 Sub Total KES581,034.48 68,965.52
  • 47. 2 Terms Conditions 1. This quotation is subject to the availability of materials. 2. Prices may change without prior notice. 3. Goods remain the property of until fully paid for. 4. Aqua Hub Kenya All queries should be brought up with the respective salesperson you were being served by. 5. Quotation Valid for 7 days For any installations, Note carefully the following: 1. Client to provide casuals as per the project. 2. Client to cater for transport (for materials) food and accommodation for technician(s) where applicable 3. The client is responsible for land preparation (excavation, ploughing, or demolishing of existing structures) before the commencement of work and will provide electrical power at the site. 4. Any repeat of or continuation of installations after the appointed day of work as a result of pending or incomplete land preparation by client will be charged extra www.aquahubkenya.co.ke sales@aquahubkenya.co.ke +254790719020