Transactions of the American Institute of Mining, Metallurgical and Petroleum Engineers, Volume 69American Institute of Mining, Metallurgical, and Petroleum Engineers, American Institute of Mining Engineers The Institute, 1923 - Metallurgy Some vols., 1920-1949, contain collections of papers according to subject. |
Contents
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Common terms and phrases
acid alloys amount analysis annealed anorthite average blast furnace breakage Bureau of Mines calcium calcium sulfide Calculated carbon cartridges cent chromium coal coke combustion containing cooling copper cost crushing curves deposits determined diameter drill steel effect eutectoid explosives ferrous sulfide flue fracture fuel bed galvanizing gases gold grain heat helium hole increase ingot iron ladle leaching limestone liquid oxygen lower magnetic magnetite manganese material metal method minerals nitrogen Observed obtained operation orebody oven oxidation Pachuca paper pearlite percentage phosphorus pillars plant porphyry practice pressure produced pyrite quartz reduced rhodochrosite rock samples seam shaft shank shown silica silicon slag solubility solution specific gravity specimens stope subsidence sulfide sulfur surface TABLE temperature tests thick tion tons treatment tuyeres vein vertical wall washed coal zinc zirconium zone
Popular passages
Page 1136 - That in the case of mines, oil and gas wells, discovered by the taxpayer, on or after March 1, 1913, and not acquired as the result of purchase of a proven tract or lease...
Page 353 - Where mining operations are in progress in a bed that lies either below or above another bed in which mining has been or is being carried on, the lessee shall. if the room-and-pillar system is employed, superimpose the pillars in the respective beds. Modifications of this provision may be necessary in steeply dipping beds and may be approved by the mining supervisor where conditions make them advisable.
Page 289 - They are recommended to the mining profession, as they have also been adopted by the National Fire Protection Association, the National Board of Fire Underwriters, and the Associated Factory Mutual Fire Insurance Companies.
Page 113 - An act authorizing the conservation, production, and exploitation of helium gas, a mineral resource pertaining to the national defense, and to the development of commercial aeronautics, and for other purposes," approved March 3, 1925, be, and it is hereby, amended to read as follows: "SECTION 1.
Page 1135 - In the case of mines, oil and gas wells, other natural deposits, and timber, a reasonable allowance for depletion and for depreciation of improvements, according to the peculiar conditions in each case...
Page 1135 - A reasonable allowance for the exhaustion, wear and tear of property used in the trade or business, including a reasonable allowance for obsolescence.
Page 368 - ... any refuse matter of any kind or description whatever other than that flowing from streets and sewers and passing therefrom in a liquid state, into any navigable water of the United States, or into any tributary of any navigable water from which the same shall float or be washed into such navigable water...
Page 1158 - The price of the entire supply of anything necessary for n community will be regulated by the cost of production of that portion of the necessary supply which is produced at the greatest expense.
Page 371 - ... nuisance, and that the public interests, as involved in the general health and well-being of the community, may not require the abatement of that nuisance.
Page 1136 - Such an interest is, we think, included within the meaning and purpose of the statute permitting deduction in the case of oil and gas wells of a reasonable allowance for depletion according to the peculiar conditions in each case.