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Jan 1, 1911

By R. W. Hunt

One of the serious and important economic administrative problems facing American railway authorities today is that of their rails, and it is one to which much thought is being given…

Jan 1, 1915

Jan 1, 1902

By George F. Sawers

THE geophysical methods of exploration employed so extensively in mining and petroleum investigations are now being used in civil engineering. Requirements differ from those of mineral exploration and therefore modified techniques have been developed.

Jan 8, 1953

Jan 1, 1953

By Fred N. Kissell, Maurice Deul

When coal is broken during mining, some of the methane trapped in the coal is released. Some recent investigations by the U.S. Bureau of Mines have shown that this methane released by breakage is only a small proportion of the total methane emission into the working section.

Jan 1, 1975

By E. M. Rogers

In hoisting from shafts of considerable depth, the dead weightdue to the accumulating length of cable is an important element, and has

Jan 1, 1889

By A. J. Shaler, B. F. Oliver

Jan 1, 1961

By Emanuel Trotz

As the long-felt need of a reliable and easily-managed pyrometer has now been fully supplied, by the latest form of Professor Wiborgh's pyrometer, an account of this instrument will, per-

Jan 1, 1893

Jan 1, 1941

Jan 1, 1940

EUGENE WESLEY SHAW, ? Washington, D. C.- (Written discussion?).-Paraffin earth is of especial interest because of the apparent difficulty of determining its chemical nature. I have submitted specimens to three chemists at different times with suggestions as to special tests that might he made. The results are indicated in the following reports:

Jan 1, 1919

Jan 1, 1947

By R. W. Raymond

Jan 1, 1902

Jan 1, 1919

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Jan 1, 1938

By Henry Louis

It can scarcely be considered a matter of doubt, in the present state of our knowledge, that the existence of, at any rate, two wellmarked allotropic modifications of gold can be recognized, namely

Jan 1, 1895

By L. Delatour, K. Voltaire

This paper presents various aspects of the legal and economic settings that govern the exploration for mineral resources in Haiti.

Jan 1, 1980

Reading Anthracite, like AIME, is celebrating its 100th anniversary. While Reading marks a century in the mining, preparation and marketing of domestic anthracite, AIME commemorates 100 years of parallel endeavor in promoting the economical production of minerals and metals and the welfare of those employed in the industries dedicated to this pursuit. Both Reading and AIME possess another common denominator, in that both were conceived in the eastern anthracite fields of Pennsylvania, where coal reigned supreme in the early days of mining.

Jan 1, 1971

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Jan 1, 1938