Report on the Mining Methods and Appliances Used in the Anthracite Coal Fields |
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Page 10
... seams . Anthracite , like bituminous coal beds , are subject to the occurrence of irregularities in the roof or floor ... seam by close approach of the roof and floor , a " pinch " or " squeeze ; " or a bona fide thinning away at the bed ...
... seams . Anthracite , like bituminous coal beds , are subject to the occurrence of irregularities in the roof or floor ... seam by close approach of the roof and floor , a " pinch " or " squeeze ; " or a bona fide thinning away at the bed ...
Page 11
... seam is cut sharply off by a fault it is of great importance to determine whether the workings are on the up - throw or down - throw side of the fracture . It may happen that the coal presents a smooth , clean cut face at the line of ...
... seam is cut sharply off by a fault it is of great importance to determine whether the workings are on the up - throw or down - throw side of the fracture . It may happen that the coal presents a smooth , clean cut face at the line of ...
Page 14
... seams splitting into two , three or more well - defined beds , by a simple swelling of these parting bands . That this feature is not peculiar to the anthracite is proven by similar instances recorded in the Geology of Yorkshire ...
... seams splitting into two , three or more well - defined beds , by a simple swelling of these parting bands . That this feature is not peculiar to the anthracite is proven by similar instances recorded in the Geology of Yorkshire ...
Page 21
... seam are easily recognized by anyone familiar with the peculiarities of coal - measure topography . The most prominent of these is the bench or terrace which almost invariably occurs at the outcrop . The soft coal seams encased in ...
... seam are easily recognized by anyone familiar with the peculiarities of coal - measure topography . The most prominent of these is the bench or terrace which almost invariably occurs at the outcrop . The soft coal seams encased in ...
Page 23
... seam . When the thickness and quality of the bed are tolerably well known and the position of its outcrop the only infor- mation desired , this laborious process may be replaced by holes bored with an earth auger . This instrument is so ...
... seam . When the thickness and quality of the bed are tolerably well known and the position of its outcrop the only infor- mation desired , this laborious process may be replaced by holes bored with an earth auger . This instrument is so ...
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Other editions - View all
Report on the Mining Methods and Appliances Used in the Anthracite Coal ... H. M. Chance No preview available - 2017 |
Report on the Mining Methods and Appliances Used in the Anthracite Coal ... H. M. Chance No preview available - 2015 |
Common terms and phrases
accidents acid acid gas adopted airway amount angle anthracite coal anthracite regions anticlinal Atlas Sheet average bars basin bituminous bituminous coal boiler boss bottom brake brake band brattice breaker breasts built cage carbonic carbonic acid cent coal breaker cost depth diameter dirt distance drill driven drum dump eight empty Explosions fire fire boss fire-damp friction gangway gear gunboat haulage Hazleton head-frame holes inches inclined inside iron large number Lehigh less lever lift located manway method miner mining engineers mules necessary operated outcrop outlet pass pillars plane plate Pottsville District props pumps raised rock rods roof Roof-falls rope screen seam shaft or slope sheaves shown by Fig shute side sinking slate starting friction steam sufficient surface thick timber tion tons track tunnel underground usually ventilation wheels width Wilkes-Barre winding engine wire rope Wyoming basin yards
Popular passages
Page 504 - ... neglect or failure aforesaid, a right of action shall accrue to the widow and lineal heirs of the person whose life shall be lost for like recovery of damages for the injury they shall have sustained.
Page 513 - The owner or agent of every coal mine shall provide at least two shafts, or slopes, or outlets, separated by natural strata of not less than one hundred and fifty feet in breadth, by which shafts, slopes, or outlets distinct means of ingress and egress are always available to the persons employed in the coal mine...
Page 508 - ... employed therein, any but experienced, competent and sober engineers ; and no engineer in charge of such engine shall allow any person, except such as may be deputed for that purpose, by the owner or agent, to interfere with it or any part of the machinery, and no person shall interfere or in any way intimidate the engineer in the discharge of his duties ; and...
Page 497 - ... and shall ascertain that the mine is free from danger, and the workmen shall not enter the mine until such examination has been made and reported, and the cause of danger, if any, be removed.
Page 499 - It shall be the duty of the inspector upon being notified as herein provided to immediately repair to the scene of the accident, and make such suggestions as may appear necessary to secure the future safety of the men ; and if the results of the explosion...
Page 503 - ... or shall handle or disturb any part of the machinery of the hoisting engine, or open a door to a mine and not have the same closed again, whereby danger is produced, either...
Page 504 - For any injury to person or property, occasioned by any willful violation« of this Act, or willful failure to comply with any of its provisions, a right of action shall accrue to the party injured, for any direct damages sustained thereby...