Magnitude and quality of Michigan's coal reserves

Michigan produced some 46 million short tons of coal between 1860 and 1949, and maintained an annual production rate in excess of one million t.p.y. between 1900 and 1923. The increasing demand for energy products and the proximity of the Michigan coal basin are a compilation centered around the quality and quantity of Michigan coal with special emphasis given to those considerations which bear on the future development potential of this resource. Towards this end the major efforts have been the production of updated coal deposit maps and a reevaluation of the coal reserves. The report itself provides an introduction to these maps and estimates, and serves as a brief summary of geologic thought concerning the Michigan coal basin.