Miners' Circular, Issues 43-57Bureau of Mines, 1942 - Mineral industries |
Contents
| 1 | |
| 25 | |
| 26 | |
| 27 | |
| 28 | |
| 29 | |
| 30 | |
| 31 | |
| 32 | |
| 33 | |
| 34 | |
| 35 | |
| 36 | |
| 37 | |
| 1 | |
| 8 | |
| 1 | |
| 3 | |
| 4 | |
| 7 | |
| 9 | |
| 11 | |
| 12 | |
| 13 | |
| 15 | |
| 17 | |
| 22 | |
| 45 | |
| 61 | |
| 66 | |
| 82 | |
| 105 | |
| 111 | |
| 113 | |
| 123 | |
| 126 | |
| 129 | |
| 130 | |
| 134 | |
| 1 | |
| 3 | |
| 4 | |
| 8 | |
| 11 | |
| 12 | |
| 13 | |
| 15 | |
| 17 | |
| 97 | |
| 105 | |
| 107 | |
| 110 | |
| 111 | |
| 115 | |
| 20 | |
| 26 | |
| 39 | |
| 46 | |
| 47 | |
| 48 | |
| 49 | |
| 50 | |
| 1 | |
| 24 | |
| 31 | |
| 38 | |
| 50 | |
| 51 | |
| 58 | |
| 1 | |
| 8 | |
| 24 | |
| 3 | |
| 5 | |
| 9 | |
| 1 | |
| 5 | |
| 12 | |
| 18 | |
| 20 | |
| 24 | |
| 30 | |
| 40 | |
| 48 | |
| 55 | |
Other editions - View all
Common terms and phrases
Accidents from Falls adequate air current Bituminous-Coal Mines blasting caps brattice Bureau of Mines cable cage carbide lamp carbon dioxide carbon monoxide cars cause Circ circuit Circular clearance coal dust coal mines Coal-Mine dangerous derailed detector detonators devices doors drill electric blasting employees entries equipment explosives extinguishers face falls of roof fatal feet Fene figs FIGURE fire fireproof flame safety lamp foreman fuse gases gassy haulage haulageways hazard hoisting holes ignition inches injuries inspection installed insulated loading locomotive machine magazines man-trip material Metal Mines Metal-Mine methane method Miners Mines Inf mining laws officials operation oxygen oxygen breathing apparatus percent permissible persons pillar posts practice prevent props protection rail recommendation rock dust roof and coal rope safe shaft shot signal slope sprags standard stope surface switch testing timber tion track trip trolley pole trolley wire underground ventilation
Popular passages
Page 1 - Interior, to make diligent investigations of the methods of mining, especially in relation to the safety of miners, and the appliances best adapted to prevent accidents, the possible improvement of conditions under which mining operations are carried on, the treatment of ores and other mineral substances, the use of explosives and electricity, the prevention of accidents, and other inquiries and technologic investigations pertinent to said industries...
Page 28 - The anchoring of posts and framing of members for railings of all types shall be of such construction that the completed structure shall be capable of withstanding a load of at least 200 pounds applied in any direction at any point of the top rail.
Page 1 - That it shall be the province and duty of said bureau and its director, under the direction of the Secretary of the Interior, to make diligent investigation of the methods of mining, especially in relation to the safety of miners and the appliances best adapted to prevent accidents, the possible improvement of conditions under which mining operations are carried on, the treatment of ores and other mineral substances...
Page 74 - The map or plan shall show the number of the last survey, station and date of each survey, on the gangways or the most advanced workings. It shall also accurately show the boundary lines of the lands of the said coal mine or colliery, and the proximity of the workings...
Page 74 - The owner or agent of every coal mine shall make or cause to be made an accurate map or plan of the workings of such coal mine, on a scale of one hundred feet to the inch.
Page 1 - ... said industries, and from time to time make such public reports of the work, investigations, and information obtained as the Secretary of said department may direct, with the recommendations of such bureau. The first annual report of the Director of the Bureau of Mines issued in 1911 states: The Bureau of Mines was established by an act of Congress (36 Stat. 369) approved May 16, 1910, and effective July 1, 1910. The demand for special recognition and aid from the Federal Government for the mining...
Page 74 - When any coal mine or colliery is worked out preparatory to being abandoned, or when any lift thereof is about to be abandoned, the owner, operator or superintendent of such coal mine or colliery shall have the maps or plans thereof extended to include all excavations as far as practicable, and such portions thereof as the case may require, shall be carefully verified.
Page 30 - ... safeguard and protect such explosives or ingredients, or from the duty to comply with other Federal, State or local laws or regulations. (c) Storage. All explosives and Ingredients of explosives must be kept in appropriate storage facilities unless: (1) They are in the process of manufacture; or (2) They are being physically transferred from one person to another or are being otherwise physically handled on the operating premises of a licensee; or (3) They are being transported; or (4) They are...
Page 32 - ... shake" shots in working places and other places in pitching veins may be fired, when no gas or fire hazard is present, if the taking down of loose, hanging coal by other means is too hazardous for men working in such places. Only permissible explosives shall be used for such open, unconfined shots in anthracite mines.
Page 47 - ... of more than 300 volts to ground and where hazard would otherwise exist, two or more guy insulators shall be placed so as to include the exposed section of the guy between them as far as possible. Neither insulator shall be within 8 feet of the ground.