Coal recovery from underground bituminous coal mines in the United States, by mining method.
Reese-RG Jr.; Dash-BB; Hamilton-PA
Washington, DC: U.S. Department of the Interior, Bureau of Mines, IC 8785, 1978 Jan; :1-30
During fiscal year 1977 the Bureau of Mines conducted a study to estimate current recoveries obtained by different types of mechanized mining systems in underground coal mines. The study also attempted to define the effects on recovery of different coalbed and mine characteristics. For this study, a number of deep mines were chosen from each major bituminous coal-producing state, and a procedure was developed for estimating the recovery obtained by each mining system used in these mines. This report gives a detailed account of this methodology and presents groupings of these estimates of recovery based on readily obtainable mine and coalbed characteristics such as mining method used, annual production, market served, and coalbed thickness. Using a statistical test and these groupings, relationships were developed from which conclusions could be drawn. Other factors that may adversely affect recovery were identified by mine personnel but were not examined because of project constraints. A distribution showing the citation frequency of these factors is also included in this report.
IH; Information Circular
NTIS Accession No.
Washington, DC: U.S. Department of the Interior, Bureau of Mines, IC 8785