ARKANSAS
Malvern Minerals
Hot Springs, AR
COLORADO
Cray Valley(Total)
Grand Junction, CO
INDIANA
Calumet Lubricants
Indianapolis, IN
MARYLAND
Active Minerals LLC
Sparks, MD
NORTH CAROLINA
Resinall Corp.
Severn, NC
NORTH CAROLINA
STI Polymer
Sanford, NC
OKLAHOMA
HollyFrontier Refining & Marketing LLC
Tulsa, OK
PENNSYLVANIA
Kinsley Materials
York, PA
TEXAS
Dynasol
Houston, TX
GERMANY
HPF Minerals
INDIA
Kerala Minerals & Metals, Ltd
MEXICO
Resinas Sinteticas
MEXICO
Sierra Madre Corp.
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