North America
Silica Sand - USA and Mexico
Feldspar - USA
Talc - USA and Canada
Bentonite - USA
Zeolites - USA
Sulfur - USA
Volcanic Ash - USA
Borates - USA
Kaolin - USA
Spodumene - USA and Canada
High Purity Silica - USA and Canada
Nepheline Syenite - Canada
Nephline Syenite - Canada
Wollastonite - USA, Canada and Mexico
Copper - USA
Precious Metals - USA
Container Glass Operations - USA
Glass Technology - USA
Soda Ash - USA
Sodium Sulfate - Mexico
Celestite - Mexico
Fluorspar - USA, Mexico
Expert Witness Service - Silica Sand, Cullet - USA
