Since its incorporation in 1979, privately held Precision Samplers has built its identity around mechanical sampling systems from its Charleston, West Virginia base. The company has supplied more than 300 systems for coal and other bulk materials across several continents, supporting them with inspection and maintenance services after installation. Its work is designed in accordance with ASTM D-7430 standards.
ASTM D-7430 Standard Practice for Mechanical Sampling of Coal
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ASTM D6609
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Pioneer Conveyor, LLCKnown for producing thousands of custom conveyor systems, Pioneer Conveyor is a West Virginia manufacturer serving bulk-material customers across North America. Its in-house operation brings engineering and fabrication together, with a patent-pending catenary line reflecting the company’s focus on tailored conveyor solutions.BRUCETON MILLS, WV
Quality Environmental Containers, IncFounded in 1994, Quality Environmental Containers makes sampling containers and laboratory supplies for the environmental testing industry, with its product line designed by environmental scientists. Based in Beaver, West Virginia, the company is a certified Minority Business Enterprise and is known for pre-cleaned containers that meet or exceed U.S. EPA requirements, including a comprehensive line developed specifically for PFAS sampling. Its quality program tracks products through cleaning, certification, packaging, and shipment.BEAVER, WV
Richmond Engineering WorksFounded in 1996 by five electrical engineers, Pittsburgh-based Richmond Engineering Works designs, integrates and services bulk-material-handling equipment and systems. Its three-discipline engineering team supports machines such as rotary car dumpers and stacker reclaimers, while its in-house capabilities include reverse-engineered replacement parts for both REW and competitor equipment. The privately held company also provides 24/7 field support, including inspections, upgrades and breakdown assistance, and operates a separate oil-and-gas controls business.PITTSBURGH, PA
Bürkle GmbHFrom its base in Bad Bellingen, Bürkle GmbH develops, manufactures and distributes sampling equipment, pumps and laboratory supplies for industrial, laboratory and scientific users worldwide. The company’s range includes specialized systems for sampling liquids and bulk materials, alongside equipment designed for handling aggressive or hazardous media. Bürkle has held ISO 9001 certification since 1995 and has received an EcoVadis Platinum medal, placing it among the top 1% of assessed companies for sustainability.BOHEMIA, NY