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Author Topic: Distance Determination Information Needed  (Read 3263 times)

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Offline Kimberly James

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Distance Determination Information Needed
« on: July 18, 2023, 08:13:01 AM »
Hi All,
I am in need of some feedback and would appreciate any info you would be willing to share.


1.) Is your lab ACCREDITED via ANAB for distance determination? If yes...
2.) What measurement process do you use such as (laser, tape measure, or other)
3.) Did you run our own stats and complete the Uncertainty Budget in-house or did you hire someone?


If this is better posted as a Poll, happy to do so.


Many thanks,
Kim James
Maine State Crime Laboratory

Offline Holli Worden

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Re: Distance Determination Information Needed
« Reply #1 on: July 18, 2023, 08:43:56 AM »
Yes (ANAB Accredited), we did uncertainty of measurement using a tape measure and completed the stats in-house.

Offline Loandra Pellot-Vazquez

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Re: Distance Determination Information Needed
« Reply #2 on: July 18, 2023, 08:49:19 AM »
ANAB accredited, we use a laser for measurements, and the uncertainty of measurement was completed in-house.
Loandra (Loly) Pellot
Tarrant County Medical Examiner's Office
Fort Worth, TX

"Justice is sometimes pictured as blindfolded. However, scientific evidence usually pierces the mask." -Wilmer Souder

Offline Justine Kreso

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Re: Distance Determination Information Needed
« Reply #3 on: July 18, 2023, 09:56:26 AM »
ANAB accredited, laser, and in-house UM.  The stats aren't too difficult and you can use the same template that you do for barrel/overall length.
« Last Edit: July 18, 2023, 09:56:36 AM by Justine Kreso »
Justine Kreso
Onondaga County Center for Forensic Sciences
Syracuse, NY

Offline Richard Rotella

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Re: Distance Determination Information Needed
« Reply #4 on: July 18, 2023, 01:51:08 PM »
For SWIFS in Dallas County:

  • Yes ANAB Accredited
  • Leica Laser with a panel that the muzzle of the gun goes through to allow for measuring off to the side of the firearm
  • U of M was done in-house
« Last Edit: July 18, 2023, 01:51:45 PM by Richard Rotella »

Offline Julie Knapp

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Re: Distance Determination Information Needed
« Reply #5 on: July 18, 2023, 02:40:37 PM »
same with Richard for Colorado Bureau of Investigation.

Offline Russ Karsten

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Re: Distance Determination Information Needed
« Reply #6 on: July 18, 2023, 02:50:58 PM »
Same as Julie for labs within the Michigan State Police.
Michigan State Police
Grand Rapids Laboratory
Firearm & Toolmarks Unit

Offline Steve Ostrowski

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Re: Distance Determination Information Needed
« Reply #7 on: July 18, 2023, 03:28:41 PM »

We are not ANAB accredited in GSR/DD.  We chose to remove it from our scope 2 cycles ago.  However, we still perform the traditional work. 

We issue standard lab reports but on alternate letterhead without ANAB logo.  We also add this disclaimer to report verbiage:  "Please note, gunshot residue examinations are not covered under the Forensic Laboratory’s scope of accreditation."
Steve Ostrowski
NHSP Forensic Lab
33 Hazen Dr.  Concord, NH 03305  
ph. 603.223.8352
stephen.h.ostrowski@dos.nh.gov

Offline Kimberly James

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Re: Distance Determination Information Needed
« Reply #8 on: July 18, 2023, 03:52:12 PM »
Thank you all for the replies.  Happy to see more if others are willing.


I appreciate the speedy information.


Kim

Offline Dennis Lyons

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Re: Distance Determination Information Needed
« Reply #9 on: July 19, 2023, 08:05:09 AM »
Here in RI same as Steve
Dennis J. Lyons
Rhode Island State Crime Lab
University of Rhode Island
41 Lower College Road
Kingston, R.I. 02881

Offline Emily Bagwell

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Re: Distance Determination Information Needed
« Reply #10 on: July 19, 2023, 08:28:12 AM »
ANAB accredited. Tape measure. MU Budget done in-house.
Emily Bagwell
Technical Leader
Georgia Bureau of Investigation

Offline Dan Alessio

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Re: Distance Determination Information Needed
« Reply #11 on: July 19, 2023, 09:35:50 AM »
ANAB accredited.  Laser (Leica DISTO X3).  UM in-house.

Offline Kimberly James

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Re: Distance Determination Information Needed
« Reply #12 on: July 19, 2023, 12:14:37 PM »
Hi Again,
If anyone would be willing to send your U of M worksheet or data sheets for the process used for determining your uncertainty for use with a laser, it would be greatly appreciated. It is a big ask[size=78%].[/size]


Before our QM signs off on our planned process she wants to see what others did. 


If you would rather not post it here, please email me. 

Kimberly.d.james@maine.gov


Thank you!


 

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