Mineral Research & Development (MRD) is a basic manufacturer of high quality, inorganic, metallic salts. We have been in business since the early l960抯 and operate as a Division of Chemical Specialties, Inc. a wholly owned subsidiary of Rockwood Specialties, Inc. headquartered in Princeton, NJ, USA. Our main sales office is located in Harrisburg, North Carolina with two production facilities, one in Harrisburg, NC and the other in Freeport, TX. The Freeport, Texas facility is ISO 9002 certified.