Membership:
- American Society of Civil Engineers (ASCE).
- Transportation Research Board (TRB), Mineral Aggregates Committee (AFP70).
- Transportation Research Board (TRB), Modeling for the Design, Construction, and                     Management of Geosystems Committee (AFS50).
- Aggregate Foundation for Technology, Research and Education (AFTRE).
- American Society of Civil Engineers (ASCE), Geo Institute, GI-Pavements.
- National Stone, Sand and Gravel Association (NSSGA) Expert Task Group.