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(2008) Letter health consultation : Mason City coal gasification plant site, Mason City, Iowa EPA facility ID: IAD980969190 (2008). Public Health, Department of (Health and Human Services, Department of)
(2008) Letter health consultation : Northwest States Portland Cement Company site, site, Mason City, Iowa EPA facility ID: IAD98053431 (2008). Public Health, Department of (Health and Human Services, Department of)
(1982) Annual report: Iowa State Mining and Mineral Resources Research Institute, July 1, 1981 - June 10, 1982, 1982. Iowa State University
(1978) Incorporating Orphaned Mine Spoil Reclamation into the Mining Plan by James B. Gulliford, June 13, 1978. Iowa State University
(1977) Economics of Mining Coal in Iowa, 1977. Iowa State University
(1973) Iowa's Coal Mining Heritage including Supplementary Material for the Film The Last Pony Mine, 1973. Iowa State University
(1920) Iowa Coal, October 6, 1920. Iowa State University