Transactions of the American Institute of Mining, Metallurgical and Petroleum Engineers, Volume 69
Vols. for 1919- (v.60- ) include the proceedings of the Institute of Metals Division of the American Institute of Mining, Metallurgical and Petroleum Engineers.
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acid alloys amount analysis appears average blast Bureau Calculated carbon carried cartridges cause cent charge coal coke complete considerable considered containing cooling copper cost curves deposits determined developed drill effect eutectoid experiments explosives fact field fuel furnace gases give given gold hardness heat helium higher hole important increase indicate iron less liquid lower material metal method minerals mining necessary nitrogen Observed obtained occur operation oven oxide oxygen pass plant possible practice present pressure probably produced properties quenched reduced rock samples seam shown silica silicon slag solution specimens steel structure sulfide sulfur supply surface TABLE taken temperature tests tion treated treatment tuyeres unit various varying vein wall washed zirconium zone
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.