Deep Cover Pillar Extraction in the U.S. Coalfields
Public Domain
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08/01/2002
Details
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Description:A study is described with the objective of evaluating the various methods and strategies by which panels, production pillars and barrier pillars are developed and extracted under deep cover, and to develop appropriate design guidelines.
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NIOSHTIC Number:nn:na
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Main Document Checksum:urn:sha-512:bb7207c06d547dfbbaad63d7f25b4c48e8de3f7e2732d97158c778291533a10f505d635830e1d5d1932b1a3b08b1c3727a7f90b30dbaddcc9d7840d53cca16a5
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[PDF
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