"I don’t think we would have the quality of the AB program that we do [without] having their involvement, maintaining the standard that we do. I think it’s helped us immensely."
New Hampshire Department of Transportation
Bureau of Materials & Research
Alan Rawson, Administrator
AASHTO re:source’s Proficiency Sample Program (PSP) is the largest construction materials sample program in the world, with a customer base of approximately 3,000 testing laboratories. Samples are distributed to federal, state, independent, commercial, and research testing laboratories.
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