About Us
Our dedicated forensic specialists are committed to delivering thorough, unbiased investigations. We turn complex evidence into clear, actionable insights for legal and private cases.
Experienced Expertise
Professional Experience
20 years of experience conducting trace evidence and impression analysis on forensic evidence as a part of criminal investigations. Served as the technical lead of the Trace Evidence Section at the Minnesota Bureau of Criminal Apprehension for 12 years. Current president of the American Society of Trace Evidence Examiners (ASTEE). Has been an active member of NIST OSAC Materials Subcommttee since its inception and has participated in drafting ASTM standards.


Skills
Experience performing analyses to characterize, compare, and identify the chemical and physical properties of evidentiary items including the physical and chemical analysis of hair, paint, polymers, tape, glass, building materials, filaments, ignitable liquids, unknown materials, and impressions (footwear, tire, fabric, etc.).
Utilizes many analytical techniques including microscopy (including PLM and fluorescence), Fourier Transform Infrared Microscopy (FTIR), microspectrophotometry, pyrolysis gas chromatography with mass spectrometry and flame ionized detection (GC-MS, PGC-MS and PGC-FID), scanning electron microscopy with energy-dispersive x-ray spectroscopy (SEM-EDS), glass refractive index measurement (GRIM), and other techniques.
Technical leader for the Trace Evidence Section for 12 years which involved quality assurance monitoring of laboratory instrumentation, methods, operating procedures, and safety practices, the training of scientists, and the validation and implementation of test methods and instrumentation.
Certified ANAB Technical Assessor conducting numerous audits to ISO 17025:2017 and ANAB AR3125.
Expert Testimony


Certifications
American Board Certified (ABC) Examiner in Paints and Polymers
American Board Certified (ABC) Examiner in Hairs and Fibers
International Association for Identification (IAI) Certified Footwear Examiner
Certified technical auditor for the ANSI National Accreditation Board (ANAB AR3125 and ISO 17025:2005 standards)
Professional Involvement
Midwestern Association of Forensic Scientists (MAFS) – Member (10/06)
International Association of Identification (IAI) – Member (02/07)
Minnesota Microscopy Society (MMS) – Member (10/06)
The American Society of Trace Evidence Examiners (ASTEE) – Charter Member (1/10)
· President-Elect/President- 01/2023 to 12/2024
· Executive Secretary – 07/2017 to 12/2022
Minnesota Division of IAI- Member (10/12)
American Society for Testing Materials (ASTM)- Member (06/20)
NIST Organization of Scientific Area Committees- Materials
· Affiliate (05/15 to 10/18)
· Voting Member (10/18 to Current)
· Chair of Hair Task Group
· Chair of Trace Evidence Recovery Task Group
