Transactions of the American Institute of Mining, Metallurgical and Petroleum Engineers, Volume 69

Front Cover
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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Contents

Pyritic Smelting and Basic Converting at the Kosaka Copper Smelter Japan
123
Heap Leaching at Bisbee Arizona By A W HUDson and G D WAN ARsdale
137
Relative Efficiency of Amalgamation and Cyaniding By ALLAN J CLARK
155
Proposed Plan for Crushing Grinding and Concentrating Lowgrade Sulfide
176
A Contribution to the Kick versus Rittinger Dispute By H E T HAULTAIN
183
Ball Paths in Tubemills and Rock Crushing in Rolls By H E T HAULTAIN
198
Mining Methods at Bawdwin Mine By A B CALHoun
208
The Rove Tunnel By M MATHIEU
248
Liquidoxygen Explosives at Pachuca By MICHAEL H KURYLA and GALEN
271
Installation of Firefighting Equipment in Mines By BENJAMIN F TILLson
341
Emergency Power for Mines By GRAHAM BRIGHT With Discussion
369
Subsidence at Miami Arizona By J PARKE CHANNING With Discussion
394
Examples of Subsidence in Two Oklahoma Coal Mines By J J RUTLEDGE
406
Minedrainage Stream Pollution By ANDREw B CRICHTon With Discussion
434
Interpretation of Results of Coalwashing Tests By THoMAs FRASER
447
Design and Operation of Roberts Coke Oven By M W DITTo With Dis
481
Heat Distribution in New Type Koppers Coke Oven By Jos WAN ACKEREN
513
Combustion of Blastfurnace Cokes in Fuel Beds By RALPH A SHERMAN
526
Combustion of Coke in Blastfurnace Hearth By G ST J PERROT
543
Forms of Sulfur in Coke and Their Relations to Blastfurnace Reactions
587
Desulfurizing Power of Iron Blastfurnace Slags By RICHARD S McCAFFERY
606
Use of Magnetic Ore in the Blast Furnace By G P PILLING
635
Review of Present Status of Drill Steel Breakage and Heat Treatment
648

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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.

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