Magnitude and quality of Michigan's coal reserves

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