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A Method of Assessing the Efficiency of Powered Supports in ServiceBy Bigdy D. N
The paper describes a system for providing mine management with a continuous indication of the effectivness of longwall coalface powered supports in controlling roof-to-floor convergence. The syst
Jan 1, 1988
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A Method of Calculating Autogenous/Semi-Autogenous Grinding Mill Specific Energies Using a Combination of Bond Work Indices and Julius Kruttschnitt Parameters, then Applying Efficiency FactorsBy D Burgess
Since the days of mandatory high cost pilot plant testing in 6 ft + 2 ft SAG mills autogenous griding/semi-autogenous grinding (AG/SAG), mill specific energy is now calculated by various empirical for
Oct 29, 2012
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A Method of Calculating Sinking-Funds, and a Table of Values for Ordinary Periods and Rates of InterestBy J. B. DILWORTA
Ix estimating the investment-value of a mining-property or plant, the value of which decreases with operation, it is often necessary to know the sum which must be set aside periodically from earnings
Nov 1, 1909
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A Method of Calculating Sinking-Funds, and a Table of Values for Ordinary Periods and Rates of Interest.By Frank Firmstone
Discussion of the paper of John B. Dilworth, presented at the Pittsburg meeting, March, 1910, and printed in Bulletin No. 35, November, 1909, pp. 1041 to 1043. FRANK FIRMSTONE, Easton, Pa. (communica
Apr 1, 1911
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A Method Of Designing Auxiliary Ventilation Systems For Long Single Underground OpeningsBy Pierre Mousset-Jones, Felipe Calizaya
The design of an auxiliary ventilation system for long underground openings (drifts, ramps and shafts), often requires the installation of multiple fans. The fans are installed in series and separated
Jan 1, 1993
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A Method Of Determining In Situ Stress In Anisotropic RockBy Robert M. Becker
The evaluation of in situ rock stresses from measurements of the change in diameter of a borehole that is stress-relieved by overcoring has become a common practice. Generally the stress evaluation ha
Jan 1, 1968
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A Method of Determining Recoverable Iron in Mixed Magnetite-Hematite OrebodiesBy P. E. Cavanagh
"The Davis tube test has been used for many years as a laboratory method for determining the magnetic iron re-coverable from a magnetite iron orebody. This paper de-scribes a method for determining th
Jan 1, 1968
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A Method of Distributing Error to Predict Mass Balances For Instantaneous Sampling of Copper Flotation CircuitsBy Frank F. Aplan, Edward C. Dowling, Richard R. Klimpel
Several series of time-instantaneous samples were taken on a cell-by-cell basis in the flotation circuits of the Pinto Valley, AZ copper concentrator. These samples were used to calculate mass flow ra
Jan 1, 1990
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A Method Of Evaluating Vehicle Seat Vibration With Consideration Of Subjective Judgment - IntroductionBy Yumi Nakashima, Setsuo Maeda
Vibration magnitude and frequency of the z-axis vehicle seat are time-variant, which are influenced by not only vehicle vibration characteristics themselves but also road surfaces, speeds and the huma
Jan 6, 2006
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A method of extending wire rope service lifeBy S. Wood
"Plastic Filled Valley (PFV) wire rope represents a significant development over the design of conventional wire rope. A sealing thermoplastic is impregnated under controlled conditions of temperature
Jan 1, 1982
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A Method of Fatigue Testing Drill RodsBy T. W. Wlodek
Abstract A simplified method of fatigue testing full-dimension, as-rolled, non-machined, mining drill rods is very desirable to the mining and steel industries in the classification of steels availab
Jan 1, 1951
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A Method of Predicting Open Cast Backfill Settlement as Applied to an Open Cast Coal Operation in the UKBy Denby B
The ever increasing demand on land use has led to large areas of land being considered for development, which because of past mining activities are covered by substantial depths of fill materials. T
Jan 1, 1995
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A Method of Preparing Closely Sized Micron and Submicron FractionsBy R. W. Smith, R. J. Charles
Fractions of glass particles in the size range 0.5 to 5.0 µ were prepared by an elutriator that operates in a centrifugal field. Although mean sizes of commercially graded abrasive powders were ten ti
Aug 1, 1956
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A Method of Preparing Titanium TrichlorideTitanium tetrachloride may be reduced to trichloride with hydrogen on a hot tungsten filament and other hot: surfaces. The effect of temperature, time and size of t.he filament on the rate of reaction
Jan 1, 1956
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A Method Of Projecting U.S. Petroleum SupplyBy Paul W. McGann
This paper presents a methodology for long-range studies of petroleum supply, to meet projected demands, that involves modifications of procedures used previously. This paper continues a series of pap
Jan 1, 1960
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A Method Of Rapid Dephosphorization Of Bessemer SteelBy Gordon M. Yocom
A PROPER consideration of the subject of this paper should include economic aspects as well as the technical phases of the metallurgy, production, and properties of the product. The metallurgical pha
Jan 1, 1941
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A Method Of Rolling Steel Or Iron Eye-BarsBy Charles Macdonald
WROUGHT-IRON eye-bars for bridges and roofs, designed upon what is known as the pin connection system, have been successfully manufactured in this country for some years. The most approved methods emp
Jan 1, 1879
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A Method of Treating the Leaching Residue from Sered Nickel Plant StockpileBy František Molnar, Zsolt Szentirmai, Juraj Schmiedl, Felix Sekula
"Hydrometallurgical nickel production in Sered Nickel Plant (Slovakia) that treated roasted Albanian ore left behind a considerable amount of the solid leaching residue. About 6 million tons of this f
Jan 1, 2008
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A Method of Working a Highly Inclined Thick Coal-SeamBy J. A. H. Church
My paper entitled "Spontaneous Combustion of Coal in Mines;" read some time ago before this Branch, consisted chiefly of extracts from the British Blue Book dealing with the same subject. Fallowing my
Jan 1, 1924
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A Method to Account for Variability in the Geotechnical Design of Longhole Open StopesBy Amir Karami, Derek Kinakin, Catherine Schmid
The Mathews Stability Graph Method (Mathews et al., 1981) has been used by geotechnical engineers and mining engineers for over 40 years to estimate the performance of longhole open stopes in undergro
Oct 1, 2024