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Author Topic: Gun in concrete?  (Read 2350 times)

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Offline Matthew R. White

  • AFTE Member
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  • Posts: 9
  • Gender: Male
Gun in concrete?
« on: April 19, 2021, 07:57:04 AM »
I have a recent case involving evidence within concrete. Has anyone had a similar situation?
Any policy / procedure you lab utilizes? I would welcome some recommendations
« Last Edit: April 19, 2021, 01:56:45 PM by Matthew R. White »
Matthew R. White
Firearm / Toolmark Examiner
BCI&I Laboratory
1560 State Route 56 SW
London, OH 43140

Email: Matthew.White@ohioattorneygeneral.gov

Phone: 740.845.2528
Fax: 866.498.3908

Offline Gary Lind

  • Gary M. Lind
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Re: Gun in concrete?
« Reply #1 on: April 19, 2021, 08:43:02 AM »
See this thread along with the attachments from Bexar County
http://forum.afte.org/index.php?topic=12996.msg69992#msg69992
"Better to have a gun you don't need than have a need for a gun you don't have"

Offline Connor Smith

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  • Posts: 12
  • Gender: Male
Re: Gun in concrete?
« Reply #2 on: April 19, 2021, 09:51:24 AM »
I worked a case recently with a firearm in concrete. I was able to remove the majority of concrete from the exterior of the firearm using dental picks. Slow process, but it worked. I was able to get the firearm field stripped with this method and a little help from an ultrasonic cleaner. I used a concrete dissolver (link below) to assist with removing concrete from the barrel and portions of the slide after disassembly. Did some practice with reference firearms before using the product/method on casework. Consistently had success with identifying breech face marks, less success with bullet comparisons. Concrete can be pretty abrasive, especially in a softened condition. I am in the process of writing up an AFTE article on the topic, but it is not done yet.


https://www.sakrete.com/products/concrete-dissolver

 

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