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- W340565269 abstract "This report describes the demonstration of longwall mining in a seam dipping 27 deg to 34 deg. Equipment was selected on the basis of capability, compatibility, and cost. The longwall equipment operated very well on the steep pitch with an average equipment downtime of 21.9%. Coal handling out by the face was a problem that caused an additional downtime of 19.5%. Development for the panels proved to be the major problem in the economics of longwall mining on a steeply dipping seam. During the first 9 months of operation, the longwall averaged 71.9 tons per man-shift (TPMS) and development averaged 0.6 TPMS. for an overall average of 14.1 TPMS." @default.
- W340565269 created "2016-06-24" @default.
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- W340565269 date "1987-01-01" @default.
- W340565269 modified "2023-09-27" @default.
- W340565269 title "Demonstration of longwall mining in a steeply dipping coal seam. Research report, September 1977-May 1986" @default.
- W340565269 hasPublicationYear "1987" @default.
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