Resource targets for advanced underground coal-extraction systems. [Identification of location and geology of deposit for which greatest savings can be realized by advanced mining systems in 2000] (original) (raw)

This report identifies resource targets appropriate for federal sponsorship of research and development of advanced underground coal mining systems. The geological data used in the analysis came from A Study of the United States Coal Resources by John Ferm and Paul Nuthig of the University of Kentucky, Lexington. In contrast to previous research, which focused on a particular resource type, this study made a comprehensive examination of both conventional and unconventional coals, with particular attention to exceptionally thin and thick seams, steeply dipping beds, and multiple seam geometry. The major thrust of the targeting analysis was forecasting which coals would be of clear commercial significance at the beginning of the 21st century under three widely different scenarios for coal demand. The primary measure of commercial importance was an estimate of the aggregate dollar savings realized by consumers if advanced technology were available to mine coal at prices at or below the price projected for conventional technology in the year 2000. Both deterministic and probabilistic savings estimates were prepared for each demand scenario. The results indicate that the resource of primary importance is flatlying bituminous coal of moderate thickness, under moderate cover, and located within the lower 48 states. Resources of secondary importance are the flatlying multiple seams and thin seams (especially those in Appalachia). The rather substantial deposits of bituminous coal in North Alaska and the deeply buried lignites of the Gulf Coast present transportation and ground control problems which appear to postpone their commer:ial importance well beyond 2000. Steeply dipping coals, abandoned pillars, and exceptionally thick western coals may be important in some regions or sub-regions, but the limited tonnage available places them in a position of tertiary importance. i i i FOREWORD This report identifies resource targets appropriate for research and development of advanced underground coal mining systems. The study reported here is one of a series of documents produced by a program to define, develop, and demonstrate coal mining systems with substantially improved production cost and safety performance, while complying with regulatory intent in the areas of miner health, environmental impact, and coal conservation. Earlier reports established systems performance goals and conceptual design requirements. A companion document by Ferm and Muthig (1982) describes the results of a geological study of generic resource types, including estimates of the tonnages associated with commonly occurring sets of mining conditions.