Improved Design Of Coal Pillars For U.S. Mining Conditions

Bieniawski, Z. T.
Organization: International Conference on Ground Control in Mining
Pages: 10
Publication Date: Jan 1, 1981
This paper presents the results of a survey of room and pillar dimensions and design practice in U.S. coal mines aimed at improving the design procedures in room and pillar mining. A review is given of the current pillar strength formulas and suggestions are made for better utilization of research results in engineering practice.
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