Martin Marietta-Midland

COOPE, B.M. MAGNESIA MARKETS - REFRACTORY CONTRACTION ANDCAUSTIC STAGNATION. INDUSTRIAL MINERALS, AUGUST 1983,PP. 57-87.JOHNSTONE, S.J., AND M.G. JOHNSTONE. MINERALS FOR THECHEMICAL AND ALLIED INDUSTRIES. WILEY. 2ND ED., 1961,PP. 336-360.MARTIN MARIETTA CORPORATION. FORM 10-K FOR THE FISCAL YEARENDED DECEMBER 31, 1982. 1983, P. 4._____. MARTIN MARIETTA ANNOUNCES FURTHER EXPANSION ATMICHIGAN REFRACTORIES PLANT. PRESS RELEASE,OCTOBER 8, 1974._____. MARTIN MARIETTA STARTS UP MIDLAND MICHIGAN PLANT;DOUBLES MAGNESIUM OXIDE CAPACITY. PRESS RELEASE,MAY 9, 1977._____. MARTIN MARIETTA BRINGS ADDITIONAL CAPACITY ONSTREAM. PRESS RELEASE, DECEMBER 1, 1981.SMITH, G.I., C.L. JONES, W.C. CULBERTSON, G.E. ERICKSEN, ANDJ.R. DYNI. EVAPORITES AND BRINES. CH. INUNITED STATES MINERAL RESOURCES, ED. BY D.A. BROBST ANDW.P. PRATT. U.S. GEOL. SURV. PROF. PAPER 820, 1973,PP. 197-216.