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Critical Shortage of Engineers M AN POWER commitments for defense, superimposed on normal domestic requirements, exceed the available supply of labor. The armed services, industry, and the professions are sizing themselves up man power-wise and are announcing that serious shortages are imminent or already in existence. The engineering profession is facing serious shortages. The main reason for this is the recall of engineering and scientific personnel to the armed services.

Jan 4, 1951

By N. E. Grosvenor

The present and future activity of western coking coals is discussed. A general description of location, quantity, and quality is used as a basis for discussing development, mining, and marketing problems facing these reserves. As the need for coke from the West increases, solutions to the present mining and transportation problems will be forthcoming. Improved mining and blending technology, coupled with a more economical transportation solution, must precede a rapid development of the West's coke reserves. Ever increasing demands on coke production enhance the prospects of an accelerated development of these reserves.

Jan 1, 1976

By James E. Breland

A case study of tangible and intangible costs incurred by a coal mining company for meeting the requirements of the Federal Coal Mine Health and Safety Act of 1969 is discussed. For clarity, the data is presented on a "before and after" basis, with special emphasis on safety records, costs, and production performance. The cost figures have been subjected to outside verification.

Jan 1, 1975

By L. P. Bayvel

The method of spectral transparency was investigated. A device for measuring particle sizes based on this method was developed, tested and applied. The device affords measurements of particle size distribution in the range from 0.1 to 4 µm. It proved possible to measure sizes not only of spherical particles but also of non- spherical ones. The spectral range in which it is necessary to determine transparency for particle size measurements was found.

Jan 1, 1980

At its meeting on February 21, 1933, the Board of Directors the following resolution defining and expressing the policy of the Institute with respect to official participation or action in controversial matters: WHEREAS, the Board of Directors at its last meting passed the following resolution: "The Board of Directors, having been appealed to by several Local Sections for advice concerning the attitude and policy of the Institute relating to the endorsement of candidates for public office, the following statement of policy is formulated:

Jan 1, 1934

There is a basic need for the health and safety manager to know what work he or she is to do and how to do it in a more professional way. Peter F. Drucker in The Practice of Management said, "The ignorance of the function of management, of its work, of its standards and its responsibilities is one of the most serious weaknesses of an industrial society-and it is almost universal." The biggest need in mining today is for its managers to have a thorough understanding of the management control activity.

Jan 11, 1979

By George Haworth

ELECTRICAL illumination of shafts, stations, and haulageways has been successfully practiced for many years, but its use in drifts and stopes where mining operations are carried on has- been limited. The large underground drifts of the Tri-State field present a lighting problem that is not satisfactorily solved by the use of the carbide lamp. It has, for some time, been the policy of the Anna Beaver mine to provide ample lighting throughout the underground haulage drifts and working faces. This has, in the

Jan 6, 1928

By J. S. Mitchell

Cobalt recovery from arsenical concentrates by pressure leaching and reduction involves special methods and operating problems. Principal steps in the process are auto-oxidation acid leaching under pressure, filtration of the tailings, purification of the solution, hydrogen reduction of the ammoniacal solution, and electrical furnacing for sulfur removal and granulating the metal. Extracting cobalt metal from arsenical ores has presented a major metallurgical problem for many years. In acquiring the Blackbird mine near Salmon City, Idaho in 1943 Calera Mining Co. accepted the challenge to solve this problem.

Nov 1, 1956

By C. E. Shoenfelt

The outstanding development in the Rocky Mountain region for 1937 was the discovery of oil on the Wilson Creek dome in Rio Blanco County, Colorado, in the Morrison formation of Jurassic age. This discovery opens up a vast territory to exploitation and definitely establishes the western slope of Colorado as one of the region's more important oil areas. In former years, a large number of structures on the western slope were tested dry in Upper Cretaceous rocks but are now believed to hold possibilities in older formations, and a number of such structures are in line for drilling in 1938.

Jan 1, 1938

By Kent A. Pease

Design methods for foundation anchors and sockets constructed in rock are based largely on empirical correlations which yield a reasonable estimate for initial capacity, but do not address the general concerns of failure mode and load-displacement behavior. This paper focuses on the behavior of foundation-rock interfaces and shows that interface behavior under increasing load results in a progression from an elastic response to secondary behavior, in which interface failure occurs, and finally to a residual stage at large deformations. Procedures to follow this progression are outlined to provide a more fundamental understanding of the problem.

Jan 1, 1984

The Mexican Government is building a mill at Churunibave in Sonora to handle lead, zinc, and copper ores. This development was sparked by increased mining activity in Mexico and Arizona caused by the Korean war. Pickands Mather, acting for a group of iron ore producers, is negotiating an agreement with Steep Rock Iron Mines, Ltd. to explore and perhaps lease iron ore property covering more than 1000 acres in the Steep Rock Lake area in Western Ontario. Plans call for the early commencement of an exploratory program. Other members of the group by Pickands Mather are Bethlehem Steel, Youngstown Sheet & Tube, the Steel Co. of Canada, and Interlake Iron Corp.

Jan 3, 1951

A well=planned, useful little book on how to prospect for and find the ores of the different metals, with illustrations of the lay of the terrain and an appendix of mining terms, which will prove most useful to young miners. [ ]

Jan 1, 1949

By L. W. Saperstein

Public Law (PL) 95-87 contains explicit demands for land use planning in its reclamation and designation sections. Both sections require recognition of local land use plans; however, they are not well integrated. Accommodation to these planning requirements affords an opportunity to create better links among local land use planners, the state's permitting authority and designation office, and mine designers. Mining companies should take a more positive interest in local land use plans and in resource inventories. States should coder handing down to local government the responsibility for accepting mine permit applications and designation of unsuitability petitions.

Jan 1, 1984

US 4,195,426-Manganese nodules are recovered from relatively great depths on the ocean floor using a self- propelled remote-controlled vehicle having a V-shaped tubular structure with a system of crawlers at its apexes. Underneath each side of the V-shaped structure is a scraping system for gathering nodules and directing them into a tubular conveying system for elevation to the surface ship. A given area of sea bed is fully mined in a single pass of the vehicle. V. Banzoli, V. Di Tella, and P Vielmo, assigned to Tecnomare, SPA. Apr. 1, 1980. 5 pp. 137-60) Filed. 3-31-78 (892,197). Priority: Italy, 4-1-77 (84119A/77).

Jan 1, 1982

By Freeman Bishop

Elburt F. Osborn's scholarly look doesn't prevent his keen insight into human beings and practical affairs of the world from coming through strong and clear, as it did in an exclusive interview with this reporter a half-hour after Dr. Osborn was sworn in as director of Interior's Bureau of Mines. An internationally recognized authority on geology and mineral resource development, Dr. Osborn won his Ph.D. at the California Institute of Technology. Since 1959, he has been vice president for research at Pennsylvania State University, where he originally joined the staff as professor of geochemistry in 1946 and also served for six years as dean of the College of Mineral Industries.

Jan 1, 1971

POSITIONS VACANT (Under this heading will be published notes sent to the Secretary of the Institute by members or other persons.) Junior and assistant engineers at $100 to $125 per month; assistant foremen and underground shift bosses at $150 per month; wanted for a large copper company in the West. Good opportunity for advancement. No. 77. ENGINEERS AVAILABLE (Under this heading will be published notes sent to the Secretary of the Institute by members or other persons introduced by members.) Member, graduate engineer, aged 44, with over 22 years' experience in connection with the development of large coal and coke properties in different parts of the country, desires position as general manager or general superintendent of large bituminous coal producer, or will take an interest and the management of a smaller operation. No. 258.

Jan 4, 1916

By Ying-Chu Hoh, Renato G. Bautista

The chemically based models previously developed to describe and predict the distribution coefficients and separation factors for several different single and multicomponent metal extraction systems are presented in a more general form in this paper. The degree of formation of the aqueous phase inorganic metal complexes, the extraction mechanism of the complexes, and the equilibrium constant for the extraction reaction are used in the development of the models. The concept has been successfully applied to extraction systems where the organic solvent extracts an ionic species and where the organic solvent extracts only the neutral species. In addition, a model to describe a system where the organic solvent is extracting several extractable species has been derived on the same basis

Jan 1, 1981

By L. W. Pommier, L. R. Plitt, F. B. Brien

L. R. Plitt (Assistant Professor of Mining and Metallurgy, University of Alberta, Canada.) — It is indeed encouraging to see rheological studies being carried out in a mineral engineering school. The bulk of the work being done today in applied rheology seems to be concerned with the behavior of polymeric solutions and thus has limited application to the solid-liquid systems encountered in mineral beneficiation. The authors have approached the problem by carrying out a dimensional analysis which showed that for power law fluids the drag coefficient, Ds, must be some function of a generalized Reynolds number which has the form: If the power law adequately describes the behavior of a fluid, the dimensional analyses predicts that the Ds - RN function should hold for all values of n' or any other dependent variable. The experimental evi-

Jan 1, 1968

MISSOURI SCHOOL OF MINES The Missouri Mining Association has enjoyed a very good year. Last October the society was reorganized and the following officers elected for the year: E. Ross HOUSHOLDER, President, ORE N. MANESS, Vice-president, WILLIAM REBER. Secretary, RUAL CHAVEZ, Treasurer. The head of our mining department, Prof. C. E. Forbes, is now serving as a Major in the United States. Army. We were fortunate in having. Prof. Chas. E. Locke, of Boston, with us for part of the winter to take charge of the senior mining work. During the autumn and winter months we had a number of informal smoker lectures in Norwood Hall. Among the speakers at these meetings were: H. A. Buehler, Missouri State Geologist; Chas. E. Locke, Boston, Mass.; V. H. Hughes, Tulsa, Okla.; Dorsey Lyon, Washington; D. C.; Prof. G. H. Cox, Professor of Geology, Rolla, Mo.; together with a number of returned alumni.

Jan 8, 1918

By James M. Polatty

FOR structural as well as economic reasons, sanded grout rather than neat cement grout should be used wherever possible. The chief drawback in using sanded grout mixtures, however, is the tendency of the sand to settle out, causing problems in pumping. Manufactured sands have not been used in sanded grout because it has been assumed that their irregular particle shape would add to the pumping difficulties. The Concrete Division of the Waterways Experiment Station in Jackson, Miss., has conducted a comprehensive investigation of grouts containing both natural and manufactured sands. In the study of manufactured sand grouts an investigation was made of physical characteristics, ease of pumping, and the effects of adding certain mineral fines. The amount of material passing 100 mesh ranged from zero to 25 pct. Results were compared with test results for natural sand grouts.

Jan 3, 1958