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IC 6481 Organization Plan of the Holmes Safety Association
By M. J. Ankeny, J. J. Forbes
The United States Bureau of Mines often receives inquiries from the mineral , petroleum , and allied industries concerning the essential steps to be taken in the formation of Holmes Safety chapters an
Jul 1, 1931
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IC 6493 Opals
By I. AITKENS
The opal , long in disfavor because it was considered " unlucky, " has become much more popular in recent years . For variety and beauty of color the precious opal is without a peer . These colors do
Sep 1, 1931
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IC 6516 Mining Laws of Great Britain
By E. P. Youngman
Great Britain has never had a basic raining law such as is in force in most foreign countries. This lack may be due to the fact that, with the exception of gold and silver, all metals or minerals belo
Oct 1, 1931
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IC 6523 Pyrites General Information
By Robert H. Ridgway
This circular outlines salient facts regarding the pyrites industry of the United States and the world. It is founded chiefly upon published information available in the literature of the subject. The
Sep 1, 1931
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IC 6524 Utilization of Dolomite and High-Magnesium Limeston
By Paul Hatmaker
This paper covers briefly the particular field of dolomite and magnesium limestone; certain uses of high-calcium limestone are mentioned only to show more clearly the limita¬ tions of the magnesian ro
Sep 1, 1931
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IC 6532 Methods And Costs Of Concentrating Tungsten Ores At Atolia, San Bernardino County, Calif. ? Introduction
By W. O. Vanderburg
This paper describing the methods of concentrating tungsten pros at the mills of the Atolia Mining Co. is one of a series of similar papers being prepared by the United States Bureau of Mines. The wr
Jan 1, 1931
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IC 6552 Mining Laws of Egypt
By E. P. Youngman
Gold and precious stones were mined in Egypt in prehistoric times. This mining, carried on at intervals, extended over thousands of years, until about 1300 A. D. Then ensued a dormant period of severa
Jan 1, 1932
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IC 6560 Pumice and Pumicite
By Paul Hatmaker
Pumice and pumicite are siliceous volcanic substances quite similar in chemical composition , but somewhat different in physical properties , manner of formation , and mode of occurrence . Production
Mar 1, 1932
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IC 6562 Abrasive and Industrial Diamonds
By Paul M. Tyler
"In preparing this paper the writer has perforce depended mainly upon published information, including the catalogs and pamphlets issued by importers and dealers such as the Diamond Drill Carbon Co. a
Mar 1, 1932
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IC 6563 Soapstone
By H. Herbert Hughes
Soapstone commonly is associated with talc , and reports on either commodity usually contain a discussion of the other . From a geological or mineralogical standpoint the combination is justifiable ,
Feb 1, 1932
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IC 6574 Milling Methods At The Balmat Mill Of The St. Joseph Lead Co., Balmat, St. Lawrence County, N. Y. - Introduction
By John B. Knaebel
This paper, describing the milling operations of the St. Joseph Lead Co. at Balmat, N. Y., is one of a series of similar papers being prepared by the United States Bureau of Mines on practice at vario
Jan 1, 1932
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IC 6576 A Tabular Review of State Laws Relating to Taxation and Inspection of Gaoline and Other Petroleum Products
By ARCH L. FOSTER
The rapid increase in the mmber of automobiles during the last 25 years has resulted in the insistent and growing demand for better roads of more permanent construction. Some form of State license for
Jan 1, 1932
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IC 6579 Sodium and Potasium Metals
By Paul M. Tyler
The alkali metals , sodium and potassium , and more particularly sodium , occur abundantly in chemical combination with other elements . The elements themselves are available in metallic form but are
Apr 1, 1932
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IC 6607 Mining, Treatment Methods, And Costs At The Plant Of The Consolidated Rock Products Co., Durbin, Calif. - Introduction
By Harry D. Jumper
This paper describing the methods of ruining a sand, gravel, and bowlder deposit 20 miles east of Los Angeles, and the classification and preparation of these materials for market, is one of a series
Jan 1, 1933
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IC 6611 Small-Scale Placer-Mining Methods ? Introduction
By Chas. F. Jackson
During the current business depression the Bureau of Mines has received many inquiries concerning placer mining, the prospects for men of small means to make wages by small-scale placer operations, th
Jan 1, 1932
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IC 6624 Magnetic Concentration Methods And Costs Of Witherbee, Sherman & Company, Mineville, N.Y. ? Introduction
By T. F. Myners
This paper, describing the concentration methods and costs of Witherbee, Sherman and Company at Mineville, N. Y., is one of the series of papers on milling methods and costs being prepared by the Unit
Jan 1, 1932
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IC 6627 Iron Oxide Pigments and Mortar Colors
By R. M. Santmyers
The pigments, whose colors are due primarily to iron exides and iron hydroxides, comprise a variety of yellow, brown, red, and sometimes black paint-coloring agents, both natural and artificially prep
May 1, 1932
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IC 6632 Mining Laws of Haiti
By E. P. Youngman
By a decree of March 14, 1929,5 the President of the Faitian Repub- lic, considering it to be necessary, until the mining legislation of the Republic shall have been revised, to put into effect the mi
Jun 1, 1932
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IC 6633 Mining Laws of the Unfederated Malay States
By E. P. Youngman
In the Unfederated Malay States, with the exception of Johore, the rights of suzerainty, protection, and administration were transferred by giam to the British Government in 1909. In the States of Kel
Jun 1, 1932
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IC 6634 Mining Laws Of Greece ? Prefatory Note
By E. P. Youngman
This paper is one of a series of digests of foreign mining legislation and court decisions that is being prepared in advance of a general report relative to the right of American citizens to explore f
Jan 1, 1932