Miners' Circular, Issues 41-52U.S. Government Printing Office, 1945 - Mines and mineral resources |
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Common terms and phrases
accidents from falls afterdamp barricade bimetal bituminous-coal mines blasting bolts brattice bulkhead Bureau of Mines cable canvas barricades carbide lamp carbon monoxide cars cause caving Circ circuit Circular coal dust coal mines Coal-Mine crosscut dangerous derailed detonators devices door drift drilling dust electric employees entry equipment explosion face falls of roof fatal feet FENE figs FIGURE fire flame safety lamp foreman gases gassy ground haulage haulageways hazard hoisting holes ignition inches incline inspection installed insulated loading locomotive lost-time injuries machine man-trip material mechanical metal mines methane method miners Mines Inf mining laws Number Percent operation persons pillars posts prevent props protection rail rate per million recommendation rescue rock rock bolts roof and coal rope safe shaft slope sprags standard stope stopping sublevel surface switches testing timber trolley trolley wire underground ventilation walls West Virginia wires
Popular passages
Page 19 - This label can be used only for returning official publications. The address must not be changed.
Page 54 - 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 35 - 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 14 - Slides, skids, or other adequate means shall be used on descending trips on grades where the locomotive is not adequate to control the trip, and where practicable, a drag shall be used on ascending trips.
Page 35 - 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 14 - Managers) may permit exemption of this requirement if such shelter holes create a hazardous roof condition. (e) At each underground slope landing where men pass and cars are handled, a shelter hole at least 10 feet in depth, 4 feet in width, and 6 feet in height should be provided.
Page 35 - ... 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...
Page 43 - ... (b) If the air immediately returning from a split that ventilates any group of active workings contains more than 1.0 percent methane, as determined with a permissible flame safety lamp, by air analysis, or by other recognized means of accurate detection, the ventilation shall be improved.
Page 41 - ... shall be equipped with safety catches that act quickly and effectively in an emergency, and the safety catches shall be tested at least once every two months.
Page 66 - ... 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...