According to our records, this business is located at P.O. BOX 340 in Tamms (in Alexander County), Illinois 62988, the location GPS coordinates are: 37.23505 (latitude), -89.2700811 (longitude). Unimin Specialty Minerals is categorized under Silica (SIC code 1446). Known organization treasurer is Seibert Cowley. You can contact the company by phone at (618) 747-2311.