- Abbey, Susan
 - Dallas - Handrwiting analyst, graphologist, and document examiner. - Advanced Document & Handwriting Examination Services
- Dallas - Specialising in forgery detection.
- Armstrong Forensic Laboratory
- Arlington - AIHA accredited and recognised for fire debris analysis, environmental, industrial hygiene and general chemical analysis.
- Geomap Company
- Plano - Supplier of geologic mapping services in the United States for the natural gas and oil industry.
- Geotech Instruments, LLC
- Dallas - Manufacturer of high-resolution low-noise seismometers, digitizers, data recorders and seismic network components.
- Graphic Detection
- Dallas - Offers document examination to provide forensic testimony about questioned documents and detection of fraud relating to handwriting, signatures, and contracts.
- Hydroscience Technologies, Inc.
- Dallas - Manufacturer of seismic data acquisition systems and towed arrays (ASW & commercial).
- K/T GeoServices, Inc.
- Argyle - Specialising in clay and bulk mineralogy analysis by X-ray diffraction (XRD) and scanning electron microscopy (SEM).
- Zyvex, LLC
- Richardson - Performs research in the field of molecular nanotechnology, with the goal of building an assembler capable of atomically precise manufacturing.
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