Report on the Mining Methods and Appliances Used in the Anthracite Coal FieldsBoard of Commissioners, 1883 - 579 páginas |
Dentro del libro
Resultados 1-5 de 36
Página 2
... operated by hand or horse- power , and the natural ventilation - aided in some instances by falling water , and later by furnaces - was usually the sole reliance for removing foul air and explosive gases . Yet in some of these early ...
... operated by hand or horse- power , and the natural ventilation - aided in some instances by falling water , and later by furnaces - was usually the sole reliance for removing foul air and explosive gases . Yet in some of these early ...
Página 23
... operated by a handle keyed or screwed to the shaft which may be lengthened by attaching additional rods or segments of gas - pipe so that in favorable ground the borings may be continued to a considerable depth , but in friable soil ...
... operated by a handle keyed or screwed to the shaft which may be lengthened by attaching additional rods or segments of gas - pipe so that in favorable ground the borings may be continued to a considerable depth , but in friable soil ...
Página 56
... operated than either shaft or slope openings , as neither hoisting or pumping machinery is needed . But the grave fact that when the coal above water level is exhausted the tunnel becomes almost worthless , is a serious offset to these ...
... operated than either shaft or slope openings , as neither hoisting or pumping machinery is needed . But the grave fact that when the coal above water level is exhausted the tunnel becomes almost worthless , is a serious offset to these ...
Página 61
... operated in the anthracite region are very rarely more than eight hundred feet deep ; their average depth is probably between three and four hundred feet . The deepest shafts are found in the neighborhood of Wilkes - Barre , and in the ...
... operated in the anthracite region are very rarely more than eight hundred feet deep ; their average depth is probably between three and four hundred feet . The deepest shafts are found in the neighborhood of Wilkes - Barre , and in the ...
Página 69
... operated from the drum without the use of deflection pulleys . As the load to be lifted during the sinking operations is comparatively light , from one to three thousand pounds , - the engine foundations are not massive . In some cases ...
... operated from the drum without the use of deflection pulleys . As the load to be lifted during the sinking operations is comparatively light , from one to three thousand pounds , - the engine foundations are not massive . In some cases ...
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Otras ediciones - Ver todas
Report on the Mining Methods and Appliances Used in the Anthracite Coal ... H. M. Chance Sin vista previa disponible - 2017 |
Report on the Mining Methods and Appliances Used in the Anthracite Coal ... H. M. Chance Sin vista previa disponible - 2015 |
Términos y frases comunes
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
Pasajes populares
Página 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.
Página 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...
Página 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...
Página 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.
Página 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...
Página 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...
Página 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...