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Mineral Research & Development (MRD) is a basic manufacturer of high quality, inorganic, metallic salts. We have been in business since the early l960’s and operate as a Division of Chemical Specialties, Inc. a wholly owned subsidiary of Rockwood Holdings, Inc. (NYSE symbol ROC) headquartered in Princeton, NJ, USA with over 9,600 employees worldwide and net sales of approximately $3.2 billion. 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.