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Recent Advances In High Gradient Magnetic Separation
By John A. Oberteuffer, Ionel Wechsler
High gradient magnetic separation, first introduced in 1968 as a means for the removal of very fine magnetic contaminants from clay, is no longer a new technology. Applications to a number of solid-so
Jan 1, 1980
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Recent Advances in Knowledge of the Colloidal Properties of Clay Suspensions and Gels
By Charles Reed
WITH the increasing importance of clay in drilling operations which demand more precise and exacting control over its behavior, there has come the realization that most of our present methods of contr
Jan 1, 1938
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Recent Advances in Mine Safety Practices and Equipment
By J. T. Ryan
SAFETY practice or the elimination of accidents in our coal mines is specifically a problem of management. It cannot be delegated to any governmental agency except that the various coal-producing stat
Jan 1, 1937
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Recent Advances in the Chemistry of Sodium Silicates: Implications for Ore Beneficiation (3a816349-7f8a-48e7-9344-996e30e9efac)
By J. S. Falcone
Soluble sodium silicate materials have well known applications in flotation for desliming, selective depression and corrosion control. Recent advances in the understanding of the complex polymeric nat
Jan 1, 1983
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Recent Advances In The Chemistry Of The Cyanogen Compounds
By J. E. Clennell
IT is a common observation that the improvements introduced in practice since the first announcement of the cyanide process have been almost entirely mechanical. Although a good deal of study and rese
Jan 10, 1915
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Recent Changes In California Voluntary Oil-Curtailment Methods
By Joseph Jensen
FROM Aug. 31, 1937, until Apr. 30, 1939, there were 40,872,610 bbl. of oil run to storage in California; from Apr. 30, 1939, to Aug. 31 of the same year 5,512,912 bbl. were withdrawn from storage. But
Jan 1, 1940
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Recent Coal Geology Research
By Aureal T. Cross
THIS paper is a review of the published literature on research in coal geology, principally exclusive of resource studies, which appeared or became available during 1950 and the latter part of 1949. T
Jan 1, 1952
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Recent Deep Tests In The Appalachian Field
By R. E. Somers
THE Appalachian field is notable for four tests drilled in recent years to depths of over 7000 ft. and for one commercial gas well at 6822 ft. The latter is the Ligonier well and produces from the Ori
Jan 3, 1924
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Recent Development In On-Line Composition Analysis Of Process Streams
By Harrison R. Cooper
Measurement of process material composition with on-line instrumentation has commanded attention of metallurgical plant management as a logical extension of the sampling operation, making possible imm
Jan 1, 1984
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Recent Development of the Hardinge-Hadsel Mill
By Harlowe Hardinqe
ABOUT three years ago a distinctive new type of crushing and grinding equipment, known as the Hadsel mill, was announced. A description appeared in the November, 1932, issue of this magazine. Any mach
Jan 1, 1935
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Recent Developments and Applications of Bulk Mining Methods in the Peoples Republic of China
By Jun-Yan Chen, Stefan H. Boshkov
Metal mining in the People's Republic of China has shown great growth during the last three decades. Over 150 new iron ore mines and nonferrous base metal mines have been opened since 1949, altho
Jan 1, 1981
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Recent Developments And Applications Of The Microseismic Method In Deep Mines
By Fred Leighton, Wilson Blake
The microseismic method of detecting instability and high-stress zones in underground mines was developed by the U.S. Bureau of Mines (USBM) in the early 1940's.l,2 For about 25 years this method
Jan 1, 1970
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Recent Developments in Classification
By A. M. Gaudin
THE purpose of ore dressing is to separate the rough ore into one or several valuable concentrates and a discarded tailing. The first step is to crush the ore so that the resulting particles may be in
Jan 2, 1927
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Recent Developments in Classification (a620fb0c-5ef5-4473-adde-8ad0245017f8)
FOLLOWING the presentation at the annual meet-ing of the paper "Recent Developments in Classi-fication," by A. M. Gaudin and W. L. Remick, the discussion presented below took place: H. N. Spicer : I
Jan 4, 1927
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Recent Developments In Coal Briquetting
By Charles Malcolmson
IN the United States, improvements in methods of combustion have made possible the use of the smaller sizes of anthracite. This coal is now being reclaimed from the culm banks accumulated by the miner
Jan 2, 1915
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Recent Developments in Coal Briquetting (ca31b0d7-9ef1-4604-b2cc-39deed4653cd)
Discussion of the paper of CHARLES T. MALCOLMSON, presented at the New York meeting, February, 1915, and printed in Bulletin No. 98, February, 1915, pp. 271 to 289. E. W. PARKER, Washington, D. C.-Th
Jan 5, 1915
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Recent Developments in Heavy-Density Separation
By John V. Beall
HEAVY-DENSITY separation processes, a commercial application of the sink-float test used in mineralogical laboratories for the separation of mineral particles by their difference in specific gravity,
Jan 1, 1948
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Recent Developments In Lead-Smelting Practice
By O. P. Chisholm
The most noticeable change in lead smelting over the past few years has been the increase in the smelting rate of lead blast furnaces. For several years a great deal of attention has been paid to the
Jan 1, 1941
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Recent Developments In Magnetic Separation Equipment
By R. L. Watts
Successful mining of taconite has required the solution of a series of difficult problems, including more efficient magnetic separation. Progress in this field is evidenced by reductions in operating
Jan 12, 1967