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Concerning The Ore Of Gold And Its Qualities In Detail.BECAUSE gold is a compound mineral praised by philosophers and all wise men as being of the highest perfection among all mixed minerals, and because of its great beauty, it is the universal opinion th
Jan 1, 1942
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Concerning Rock Alum And Its Ore.PASSING over the derivation of the word as well as the description of the alum that has been written of as a liquid and that was once called natta, I tell you that the alum that is commonly called roc
Jan 1, 1942
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Internal Friction Of An Alpha-Brass CrystalBy Clarence Zener
THE internal friction of nonferrous metals vibrating at low stress amplitudes has so far always been successfully interpreted in terms of inhomogeneities of one sort or another. Examples are the fluct
Jan 1, 1942
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Methods Of Melting In A Hearth And Various Other Methods Of Melting Metals With Charcoal And Bellows.MELTING in a hearth and in a basket is almost the same thing; charcoal and bellows are used for both. These are made large or small according to the quantity that you wish to melt, and more or less fo
Jan 1, 1942
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Accident Experience in the Mining Industry of Ontario in 1941By Ralph H. Cleland
GENERALLY speaking, the Industry lost ground in 1941 in its accident experience. Though the frequency of compensation accidents was but slightly higher than in the previous year and well below past ex
Jan 1, 1942
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Rock Bursts – A SymposiumBy Philip B. Bucky
[ ] FOREWORD THIS symposium brings together points of view, experiences and ideas on rock bursts from a goodly portion of the globe. Some conceptions, particularly those regarding the necessity
Jan 1, 1942
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Appendix B – On Coal – The Western Gleaner, Pittsburgh, 1814This paper "On Coal" was published in three issues of The Western Gleaner in 1814. Name of author is not given. This magazine was started by Cramer, Spear & Eichbaum, in Pittsburgh, Pa., in December 1
Jan 1, 1942
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High-Temperature Internal Friction Of Alpha BrassBy C. Zener, H. Nielsen, D. Van Winkle
THE internal friction of metals has been studied frequently at elevated temperatures.1-4 In most cases it rises rapidly with increasing temperature. The notable exceptions are ferromagnetic materials,
Jan 1, 1942
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Discourse And Advice On How To Operate A Mint Honestly And With Profit.SINCE I have told you of the distillation of waters and the extraction of oils from things-all ingenious and useful processes-I wish to continue to speak of the arts. I am reminded that I first wish t
Jan 1, 1942
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Petroleum Divisions Officers and CommitteesJan 1, 1942
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Papers - Nepheline Syenite: A New Ceramic Raw Material from Ontario (T. P. 951, with discussion)By Hugh S. Spence
The use of natural feldspathic rocks, as opposed to straight feldspar, for ceramic purposes is not new. "Cornwall stone," a semi-kaolinized granite containing fluorite, has long been used by the Engli
Jan 1, 1942
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Pressure Prediction For Oil ReservoirsBy W. A. Bruce
THIS paper presents the essentials of a mathematical method of studying the pressure behavior of an oil reservoir as the fluids are withdrawn. Methods are shown whereby the behavior of a reservoir can
Jan 1, 1942
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RI 3606 Manganese Investigations - Metallurgical Division - 1. Ore-Dressing Studies Of Manganese Ores - Concentration Of Manganese Ores From The Drum Mountain District, Utah ? IntroductionBy S. R. Zimmerley
As a result of the drilling program of the Mining Division, Bureau of Mines, large amounts of manganese ores have been blocked out in the Drum Mountain District of Utah. The ores, as mined, would not
Jan 1, 1942
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Engineering Research - Mechanism of Fluid Displacement in Sands (T. P. 1337)By S. E. Buckley, M. C. Leverett
The production of oil is accomplished as a result of its displacement from the reservoir by either gas or water, and the amount of oil recovery is limited by the extent to which the displacing gas or
Jan 1, 1942
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Phase Diagram Of The Copper-Iron-Silicon System From 90 To 100 Per Cent Copper (6d356d63-77f4-4cf4-af0a-990cb1217169)By A. G. H. Andersen, A. W. Kingsbury
SILICON bronzes containing iron are used to a considerable extent in industry, under the trade name of P.M.G. alloys. Various classes of wrought alloys fall in the composition range 1.5 to 3.5 per cen
Jan 1, 1942
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Production - Domestic - Oil and Gas Development and Production in North Texas for the Year 1941By F. L. Burchard, Lewis W. MacNaughton
The North Texas district, as herein defined, includes the counties of Archer, Baylor, Clay, Coolie, Foard, Hardeman, Knox, Montague, Wichita, and Wilbarger. This area covers generally the crest and so
Jan 1, 1942
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Western Pennsylvania: 1832-1885; Mining MethodsIt is always the case with heavy and cheap materials that the area within which they can be economically used depends upon the cost of transportation, and in those days of poor roads and no mechanical
Jan 1, 1942
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Tennessee, North Carolina, Georgia And Michigan - TennesseeThe earliest reference to coal in Tennessee is that by Dr. Walker in 1750 (see p. 18) where he saw it near the present site of Middlesboro. The next reference found is in 1798 when Morse stated, "some
Jan 1, 1942
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Production - Domestic - Oil and Gas Developments in New York during 1941By C. A. Hartinagel
During 1941, the total production of crude oil in New York state was 5,185,000 bbl. This represents a small increase over the average for the past five years. From 1921, when the annual production of
Jan 1, 1942