1. Soda ash from trona;Sommers;Chem. Eng. Prog.,1960
2. U.S. Short-term demand outlook for soda ash and factors affecting U.S. soda ash availability in the world market;Kostick;Chem. Ind.,1983
3. Recent Advances in Mining of Lower Grade Ores;Bhappu,1976
4. FMC's newest goal: commercial solution mining of trona;Frint;Eng. Min. J.,1975
5. U.S. Soda ash Green River's solution —Europe's problem;Watson;Ind. Min.,1981