Department of Labor —

Mine Safety and Health Administration —

Pittsburgh Safety and Health Technology Center —

Approval and Certification Center —

Department of Transportation —

Federal Railway Administration —

Federal Transit Administration —

Environmental Protection Agency —

Copper Range Company Solution Mining Project —

Mine Waste Technology Program —

National Aeronautics and Space Administration —

Jet Propulsion Laboratory —

National Science Foundation —

Directorate for Engineering —

Division of Civil and Mechanical Systems (tunneling and excavation research ) —

Engineering Research Center for Particle Size and Technology at the University of Florida —

Division of Earth Sciences —

Non-federal Programs

National Aggregate Association/National Stone Association —

National Ready-Mixed Concrete Association —

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