Facilities

Martin Marietta Magnesia Specialties LLC, a subsidiary of Martin Marietta Materials, manufactures the widest range of high purity magnesium oxide and magnesium hydroxide in North America.

Our major manufacturing facilities are located in Manistee, Michigan and Woodville, Ohio. Regional processing and distribution facilities are strategically located throughout the world to better serve our customers.

Martin Marietta Magnesia Specialties is ISO 9001:2000 – ANSI/ISO/ASQ Q9001-2000 Certified.

Division Headquarters
8140 Corporate Drive, Suite 220
Baltimore, MD USA 21236
Phone: 800-648-7400 or 410-780-5500
Fax: 410-780-5777

Magnesia Chemicals Facility
1800 East Lake Rd.
Manistee, MI 49660
231-723-1300

Dolomitic Lime Facility
755 Lime Rd.
Woodville, OH 43469
419-849-3111
Lime Sales & Tech Support

Our corporate management team consists of:

John R. Harman, President 
Joseph Reilly, Vice President – General Manager, Lime Operations
Mark T. Wajer, Vice President, Business Development & Technology
Jim Reithel, Vice President of Chemical Operations
Douglas Bopst, General Sales Manager, Chemicals

Please see our Contact Us page for sales and technical contact information.