details about charred document

1. Charred document
NAME OF SCHOOL: SAGE SCHOOL OF SCIENCE
PROGRAM: MASTER OF SCIENCE
SPECIALIZATION: FORENSIC SCIENCE
SUBJECT:
SEMESTER: 1
GUIDED BY: MISS SWETA VERMA
SUBMITTED BY: PINA PATEL
SCIENTIFIC AID IN CRIME INVESTIGATION
& QUALITY ASSURANCE

2. Table of Content
Introduction
01 Characteristics
02 Methodology
03
Collection &
Preservation
04 Reference
05 06
Forensic
Significance

3. 1.CHARRED DOCUMENT
• A Document that has
become blackened and
brittle by burning or
exposure to excessive heat
is classified as charred
document.

4.  The Document become black due to
heat.
 The edges of the documents become
curled.
 The document become fragile.
 Due to the fragility developed the
document any break into pieces even
by a small amount of pressure.
2. Characteristics

5. 3.METHODOLOGY
Handling
Stabilization
Separation
Collection &
Preservation
Decipherment

6. Handling
 Switch off the fans and close the windows of the room.
 Do not disturb the container in which the document is burnt.
 Stabilize the charred mass using stabilizers by spraying.
 If the heap of charred mass, try to procure partially burnt
document from inner middle part of the heap as unburnt
document may available due to incomplete burning.
 Do not try to remove the pages of stacks of paper, lift them
as it is.
 Scattered pages should be lifted using spatula and transfer
to glass sheet.
 Charred document found singly should be handled with the
greatest of care.
 Flat bladed tweezers are particularly useful for picking up
these instrument.

7. Stabilization
 It is placing the charred
document in the wet
moisture chamber for
several hours and spraying
of the plasticizers for
stabilization.
 Most preferable is the
polyvinyl acetate.

8. Separation

9. 4.Collection & Preservation
 It should be picked with great care by putting a
hard paper underneath the charred document.
 A stiff sheet of paper is stuffed underneath the
charred documents in the fireplace and then gently
pulled over to keep it on stiff cardboard.
 The charred mass supported on the paper and
cardboard is then covered by drawing the corners
of the brown paper together.
 It is then placed in a corrugated box where the
layers of tissue paper and cotton are placed to keep
the charred documents safely so that they do not
break while transportation.

10.  The corrugated box then should be
labeled and sealed with all the
necessary details:
 Date and time of evidence collection.
 Place of evidence collection.
 Signature of IO and two witness.
 Number of evidences in one box.

11. Decipherment
 Discovery of the
meaning of texts written
in scrips. Procedures
Photographic
method
Visual
Methods

12. A. Photographic method
• It is known for many years
that certain gases and vapour
will fog the emulsion of a
photographic plate or film
without exposure to light.
1.Contact Process

13. • The process require the
use of a Wratten#48 deep
blue filter in conjunction
with commercial film.
• It seems to intensify the
variations on property
power of the burn
document background as
compared to those part of
the paper on that ink has
been deposited.
A. Photographic method
2.Filter Photography

14. • One of the most highly
publicized decipherment
procedure.
• It works quite in the original
writing mediums are type
writing, pencil or dense iron gall
ink.
• These method utilized by
Wratten 87 (deep red filter in
conjunction) with Eastman
infrared plates.
A. Photographic method
3.Infrared Photography

16. B. Visual Methods
 The simplest and most versatile
decipherment procedures is that in
which burnt documents are examined
by a controlled light source directed at
various angles relative to the paper
surface.
1. Reflectivity Method

17.  The components of this
solution are 2 parts water,5
parts alcohol(rubbing), and 3
parts glycerin, in which the
documents are immersed for
varying periods of time.
2.Alcohol-Glycerin Immersion method
B. Visual Methods

18. B. Visual Methods
 Discovered by Superintendent Cherrill of
Scotland Yard.
 A solution of 5% aqueous silver nitrate is
poured over the fragment and second
glass plate is then placed on top of the
fragment.
 The fragments treated should be protected
from direct sunlight and within three hours
any writing developed is visible as a black
image against the grey background of the
paper.
3.Silver Nitrate Method

19. 6.REFERANCE
● https://www.google.com/url?sa=t&source=web&rct=j&url=https://forensicyard.com/charred-
documents/&ved=2ahUKEwjG_JvM7pD1AhVRzDgGHe3HCE8QFnoECCIQAQ&usg=AOvVaw0
LVaS5GpZxAkXXHCot1JXj
● https://www.slideshare.net/NishantPahuja3/charred-documents
● https://www.google.com/url?sa=t&source=web&rct=j&url=https://scholarlycommons.la
w.northwestern.edu/cgi/viewcontent.cgi%3Farticle%3D4094%26context%3Djclc&ved=
2ahUKEwjG_JvM7pD1AhVRzDgGHe3HCE8QFnoECC4QAQ&usg=AOvVaw23tdrw_m
GgIMuHTjUbtMus
● https://forensicyard.com/charred-documents/Dr.A.K. Gupta, Charred and Torn
Documents
● htttp.www.forensicsciencesimplified.org/document/Questioneddocuments.pdf
● https://legaldesire.com/forensic-examination-of-fire-and-water-damaged-documents/
● https://study.com/academy/lesson/questioned-document-examination-qde-definition-
purpose.html

20. 6.REFERANCE
• http://nicfs.gov.in/wp-content/uploads/2017/01/Charred-Documents.pdf
• https://scholarlycommons.law.northwestern.edu/cgi/viewcontent.cgi?article=4094&conte
xt=jclc
• https://www.forensicscienceexpert.com/2019/12/applications-of-infra-red-ir-
radiations.html
• https://scholarworks.rit.edu/cgi/viewcontent.cgi?referer=https://www.google.com/&httpsr
edir=1&article=1486&context=article
• https://www.google.com/url?sa=t&source=web&rct=j&url=http://courseware.cutm.ac.in/w
p-content/uploads/2021/03/Charred-
Documents.pdf&ved=2ahUKEwidnYKUv6L1AhVbwzgGHQWJCuQQFnoECA0QAQ&us
g=AOvVaw0zAoRMAJrUZFk5RGI099Xw
• https://www.google.com/url?sa=t&source=web&rct=j&url=http://www.ijics.com/gallery/a6
.pdf&ved=2ahUKEwidnYKUv6L1AhVbwzgGHQWJCuQQFnoECCwQAQ&usg=AOvVaw
1OiKKM5xSk6ECC4yfvFytr

21. Thank You