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Experimental Longwall mining in Pennsylvania anthracite mine -- 1

Brennan, R.J. / Buch, J.W. / Navrocky, E.R.

In effort to establish highly productive mechanized mining system for anthracite beds pitching between 10 and 20°, for which conventional mobile equipment is not adaptable, Bureau carried out experiment in longwall mining using Anderton-type drum cutter loader and friction-type yielding steel roof supports; roof-support system proved to be inadequate for breaking overhanging roof at break line supports, with result that roof broke over solid coal.

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Experimental Longwall mining in Pennsylvania anthracite mine -- 1

Brennan, R.J. / Buch, J.W. / Navrocky, E.R.

In effort to establish highly productive mechanized mining system for anthracite beds pitching between 10 and 20°, for which conventional mobile equipment is not adaptable, Bureau carried out experiment in longwall mining using Anderton-type drum cutter loader and friction-type yielding steel roof supports; roof-support system proved to be inadequate for breaking overhanging roof at break line supports, with result that roof broke over solid coal.

Experimental Longwall mining in Pennsylvania anthracite mine -- 1

Brennan, R.J. / Buch, J.W. / Navrocky, E.R.

In effort to establish highly productive mechanized mining system for anthracite beds pitching between 10 and 20°, for which conventional mobile equipment is not adaptable, Bureau carried out experiment in longwall mining using Anderton-type drum cutter loader and friction-type yielding steel roof supports; roof-support system proved to be inadequate for breaking overhanging roof at break line supports, with result that roof broke over solid coal.

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Title:

Experimental Longwall mining in Pennsylvania anthracite mine -- 1

Additional title:

U S Bur Mines -- Report Investigations

Contributors:

Brennan, R.J. (author) / Buch, J.W. (author) / Navrocky, E.R. (author)

Published in:

United States Bureau of Mines -- Reports of Investigations

Publication date:

1964

Size:

27 pages

Type of media:

Report

Type of material:

Print

Language:

English

Keywords:

Coal mines and mining

© Metadata Copyright Elsevier B. V. All rights reserved.

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