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 71
Página x
... hole Diamond drill process , Kind - Chandron process , CHAPTER V. - Slope Sinking and Timbering . Slope sinking , • • Slope timbering , Slope ventilation and drainage , Cost of sinking , • Slope road beds , 75 77 81 81 83 CHAPTER VI ...
... hole Diamond drill process , Kind - Chandron process , CHAPTER V. - Slope Sinking and Timbering . Slope sinking , • • Slope timbering , Slope ventilation and drainage , Cost of sinking , • Slope road beds , 75 77 81 81 83 CHAPTER VI ...
Página 10
... holes . Structural peculiarities of individual seams . Anthracite , like bituminous coal beds , are subject to the occurrence of irregularities in the roof or floor cutting out a portion of the bed , called by the miner " horse - backs ...
... holes . Structural peculiarities of individual seams . Anthracite , like bituminous coal beds , are subject to the occurrence of irregularities in the roof or floor cutting out a portion of the bed , called by the miner " horse - backs ...
Página 11
... holes or prospecting tunnels . Areas of crushed coal are not as common as we might a priori expect from the contorted condition of the coal measures . Crushed coal is commonly found along the crest and in the trough of sharp flexures ...
... holes or prospecting tunnels . Areas of crushed coal are not as common as we might a priori expect from the contorted condition of the coal measures . Crushed coal is commonly found along the crest and in the trough of sharp flexures ...
Página 19
... holes , shafts , tunnels , and drifts - if these are used for exploration , and not for the extraction of mineral or coal - the methods of utilizing the information thus obtained ; the selection of samples for analysis , and the methods ...
... holes , shafts , tunnels , and drifts - if these are used for exploration , and not for the extraction of mineral or coal - the methods of utilizing the information thus obtained ; the selection of samples for analysis , and the methods ...
Página 23
... holes bored with an earth auger . This instrument is so nearly like the coal - boring augers or hand - drills illustrated and described with the miners ' tools , that a separate draw- ing is unnecessary . Its cutting edge has a larger ...
... holes bored with an earth auger . This instrument is so nearly like the coal - boring augers or hand - drills illustrated and described with the miners ' tools , that a separate draw- ing is unnecessary . Its cutting edge has a larger ...
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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...