Your SlideShare is downloading. ×
AMEC Site Visit - July 2010 (Part 1 of 2)
Upcoming SlideShare
Loading in...5
×

Thanks for flagging this SlideShare!

Oops! An error has occurred.

×
Saving this for later? Get the SlideShare app to save on your phone or tablet. Read anywhere, anytime – even offline.
Text the download link to your phone
Standard text messaging rates apply

AMEC Site Visit - July 2010 (Part 1 of 2)

923
views

Published on

In July 2010, AMEC conducted a property site visit at the Blue River Tantalum-Niobium Project as part of their geology and data verification.

In July 2010, AMEC conducted a property site visit at the Blue River Tantalum-Niobium Project as part of their geology and data verification.

Published in: Investor Relations

0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total Views
923
On Slideshare
0
From Embeds
0
Number of Embeds
0
Actions
Shares
0
Downloads
3
Comments
0
Likes
0
Embeds 0
No embeds

Report content
Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
No notes for slide

Transcript

  • 1. Commerce Blue River Ta-Nb Project July 11-16, 2010 AMEC Site Visit: Geology and Data Verification (Part 1 of 2)
  • 2. Geology and Data Verification (July 2010) Commerce 2010 Diamond Drilling Left and Right: 2010 diamond drill operated by R.J. Beaupre Drilling Limited of Princeton B.C. 2
  • 3. Geology and Data Verification (July 2010) Commerce 2010 Diamond Drilling Left Rod sloop with HQ rods. North Thompson River valley in background. Right: Fresh core with Ta-Nb rich carbonatite. The core was properly placed into the boxes. 3
  • 4. Geology and Data Verification (July 2010) Commerce 2010 Diamond Drilling Left: 2010 diamond drill core ready for transport from the drill to Commerce’s Blue River field office. Right: Commerce’s Blue River field office core logging and sampling area. . 4
  • 5. Geology and Data Verification (July 2010) Core Sampling Process 5
  • 6. Geology and Data Verification (July 2010) Specific Gravity Measurement Apparatus The apparatus is used to measure the specific gravity using the water immersion method. A 20 cm piece of core is first weighed dry on the triple beam scale, then weighed wet while immersed in relatively clean, room temperature water. Porous core (fenite rocks) is sealed with an aerosol spray adhesive and then dried prior to immersion in in water to negate a high bias in the determination. Note cardboard shims used to level the platform. The formula used to calculate the SG is (dry core weight in air) / (dry core weight in air – core weight in water) 6
  • 7. Geology and Data Verification (July 2010) Specific Gravity Check Assays AMEC recommends to use the water immersion method for the 2010 density determination program. Notes: QQ’ plots for two different field methods for measuring bulk density (y-axis) versus a wax immersion method at an independent umpire laboratory (x-axis). All data is based on 39 data pairs from 20 cm long whole core samples. The umpire laboratory used a wax coating, water immersion methodology. Left: water displacement method versus umpire laboratory QQ’ plot. Right: Non-wax coated samples with water immersion method versus the umpire laboratory QQ’ plot The non-wax coated samples with SG determination by water immersion method correlates best with the umpire laboratory results (Right-side plot). Abbreviations: DEN2 = a water displacement method using a 2,000 mL ASTM certified graduated cylinder SG3 = a non-wax coated sample using the water immersion method. Formula = weight dry / (water level after immersion – water level before immersion) SG4 = a wax coated core sample and determination by the water immersion method. Formula = (weight in air) / (weight in air) – (weight in water) 7
  • 8. Geology and Data Verification (July 2010) Specific Gravity Check Assays AMEC recommends to use the water immersion method for the 2010 density determination program (Right- side plot). Notes: Scatter plots for two different field methods for measuring bulk density (y-axis) versus a wax immersion method at an independent umpire laboratory (x-axis). All data is based on 39 data pairs from 20 cm long whole core samples. The umpire laboratory used a wax coating, water immersion methodology. Left: water displacement method versus umpire laboratory plot. Right: Non-wax coated samples with water immersion method versus the umpire laboratory plot The non-wax coated samples with SG determination by water immersion method correlates best with the umpire laboratory results (Right). Abbreviations: DEN2 = a water displacement method using a 2,000 mL ASTM certified graduated cylinder SG3 = a non-wax coated sample using the water immersion method. Formula = weight dry / (water level after immersion – water level before immersion) SG4 = a wax coated core sample and determination by the water immersion method. Formula = (weight in air) / (weight in air) – (weight in water) 8
  • 9. Geology and Data Verification (July 2010) Core Storage Field at Valemount The quansette hut at the Blue River field office can be locked, has power, and is a multi-purpose building. Left: Pulp sample storage in labeled plastic pails. Right: Coarse rejects are stored in their plastic sample bags and returned in rice bags and crates. Samples are stored prior to shipping for analyses in this same building. 9
  • 10. Geology and Data Verification (July 2010) Core Storage Field at Valemount The core storage field is at Valemount, B.C. The core is stored on wood pallets. The area is open to the road and underlain by dirt and grass. Security can be improved with fencing and fire hazard reduced by laying down gravel. A covered pole barn or core racks will help maintain the longevity of selected holes. 10
  • 11. Geology and Data Verification (July 2010) Commerce Legacy Drilling (2005 to 2009) Left: Collar survey audit (hole F06-04 and F06-05). 4X4 wood posts have been inserted into the former hole where casing has been removed. Right: Collar survey audit (hole F07-034). Casing has been left in place for some drill holes. Note the steel plate label that has been cemented into the ground. . 11
  • 12. Commerce Blue River Ta-Nb Project Geology and Data Verification (July 2010) End of Part 1, Please go to Part 2 of 2. 12