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By W. P. Haynes

The 1938 production for all of Rumania amounted to 48.984.200 bbl., as compared with 53.239.500 bbl. in 1937. which represents a drop of 4.255.300 bbl., or 8 per cent. Of the various fields. there are only two major increases in production—Baicoi-Tintea with 3.092.400 bbl. And

Jan 1, 1939

By Joseph W. Leonard

Partition (Tromp) curves, as used in diagnosing problems in coal cleaning equipment, are discussed and classified using five arbitrarily chosen types to represent, on a scale from one to five, system performance. Causes of unsatisfactory Tromp curves for various cleaning units, ranging from operational inadequacies to problems best corrected by the equipment builder, are analyzed.

Jan 1, 1982

The following members were appointed on the Committee Advisory to the U. S. Bureau of Standards: Arthur S. Dwight (Lead). John Fairfield Thompson (Nickel). The reports of the Committee in charge of the Arizona Meeting and the Committee on Transportation to the Arizona Meeting were accepted with the thanks of the Board. The By-Laws of the Nevada Section of the Institute were approved. The subscription price of the Bulletin to non-members of the Institute was increased to $12, per year beginning with January, 1917. This increase does not affect the reduced price of $5 on extra copies of the Bulletin which are sold to members, libraries and sister societies.

Jan 7, 1916

By W. P. Haynes

The 1938 production for all of Rumania amounted to 48.984.200 bbl., as compared with 53.239.500 bbl. in 1937. which represents a drop of 4.255.300 bbl., or 8 per cent. Of the various fields. there are only two major increases in production—Baicoi-Tintea with 3.092.400 bbl. And

Jan 1, 1939

By E. C. Kersey, R. J. Gennone

MetALLOGRAPHIC investigations of composites of zinc alloys and aluminum have been made to study the effects of various thermal treatments on the zinc-alloy grain size and diffusion of zinc into the core material. The use of various alloys of zinc has necessitated the development of a universal etchant which will allow microscopic examination of the zinc grain size regardless of the composition.

Jan 1, 1960

The current status of the US lead and zinc industries was reviewed by J. G. McCullough, president of Amax Lead and Zinc Inc. He reported that in the US, lead and zinc are separate industries because of the nature of mineralization. The large Mississippi-type zinc deposits are practically lead-free, and while the new lead belt in Missouri has some zinc content, it does not have the same favorable economic impact as in the complex massive sulfide ore bodies being developed elsewhere.

Jan 11, 1977

Curious petroleum, mining and metallurgical engineers together with oceanographers, geologists, geophysicists and those in related disciplines, some 11,500 of them, poured into the Albert Thomas Convention Center in Houston, Tex. to see, and learn. This year's successful Conference, held April 22-24 featured a technical offering of 145 papers presented at 28 sessions. In addition, a total of 500 exhibits were provided by 260 companies.

Jan 1, 1970

By Lawrence Dykers

The paper presents a generalized history of the growth and utilization of electronic data processing in a medium- size, mining-oriented company. A brief narrative outlines a corporate wide data gathering system, its hardware and application. Responsibility areas for corporate accounting, operations control, engineering, and research program development are defined. A Synopsis of programs within responsibility areas is presented along with a review of program language requirements for each of these areas. Anticipated additional uses of computers and the programs being developed for these uses are outlined. The scope and growth of an Information Systems Department within Duval Corporation is briefly discussed. Suggestions are presented which should help minimize the problems and avoid some of the pitfalls of program development for those contemplating the initiation or revision of an electronic data processing system. The importance of lucid and comprehensive program documentation is stressed.

Jan 1, 1969

By Donald Barton

THE elastic, earthwaves produced naturally by earthquakes -have been used for a long time as evidence from which to draw conclusions in re-gard to the constitution of the interior and crust of the earth. The elastic earthwaves produced artificially by occasional explosions and recorded by seismological observatories were used to draw conclusions regarding the-geology of the intervening area. Intentionally pro-duced elastic earthwaves in the past five years have come to be used extensively in the investigation of very local geologic structure. The seismic method of work-ing geologic structure, which makes use of artificially controlled explosions and the resulting earthwaves, has developed almost `clairvoyant power in handling certain geologic situations, and in the discovery of salt domes in the Gulf Coastal: Plain region of Texas and Louisiana has 'scored the, most brilliant success. The. first, proposal for the use of artificial earth-quakes in the study-of velocity of elastic earthwaves in the surface formations of the earth's crust was made before 1888 by the English seismologists, Mallet and Abbot. Partly on the basis of their work, A. Schmidt in 1888 proposed- the use of the time-distance graphs of artificial earthquakes to study the variation of ve-locity with depth. Belar in 1902 proposed the practical application of such investigation in connection with boring tunnels. Galitzen repeatedly (1912, 1913) pro-posed the use of explosions to study the velocity of the longitudinal and transverse waves in the uppermost formations and pointed out that the velocity depended in a high degree on the physical character of the beds and that from changes in the velocity, conclusions could be drawn in regard to the compositions of the beds. Somewhat the same thought: was proposed by von dem Borne (1908), by Benndorf, Udden, and others.

Jan 9, 1928

By Guillermo Hileman

In March the President approved the new oil bill, .which became effective as Law No. 12161, providing among other things a contribution or tax on all producers varying from 8 to 12 per cent payable monthly. The new regulations, for chapter VI bearing on the tax feature, of this

Jan 1, 1936

OFFICERS AND DIRECTORS For the year ending February, 1935 PRESIDENT AND DIRECTOR HOWARD N. EAVENSON PITTSBURGH, PA. PAST PRESIDENTS AND DIRECTORS SCOTT TURNER WASHINGTON, D. C. FREDERICK M. BECKET NEW YORK, N. Y. VICE-PRESIDENT, TREASURER AND DIRECTOR KARL EILERS NEW YORK, N. Y. VICE-PRESIDENTS AND DIRECTORS EUGENE MCAULIFFE OMAHA, NEB. PAUL D. MERICA NEW YORK, N. Y. HENRY KRUMB SALT LAKE CITY, UTAH EDGAR RICKARD NEW YORK, N. Y. LOUIS S. CATES NEW YORK, N. Y.

Jan 1, 1934

By Paul Soros

Terminal facilities were recently completed at Conneaut, Ohio, on Lake Erie, for the Bessemer and Erie Railroad Co. (a wholly-owned subsidiary of U.S. Steel Corp.) which may become the blue- print for all future coal shipping terminals. Design and engineering of the new facility was by Soros Associates, New York, N. Y. Unlike terminals of conventional design, for example, those at Toledo and Newport News, which load coal directly from the railroad car to the vessel, the new installation passes the coal into temporary storage, loads the vessel from temporary storage and provides alternative reclaiming systems in case of major system failure.

Jan 1, 1966

By Guillermo Hileman

In March the President approved the new oil bill, .which became effective as Law No. 12161, providing among other things a contribution or tax on all producers varying from 8 to 12 per cent payable monthly. The new regulations, for chapter VI bearing on the tax feature, of this

Jan 1, 1936

By J. P. Norris, W. T. Pettijohn

The Mufulira Copper Mine, Ltd., is in Northern Rhodesia, ten miles from the Belgian Congo border, and is one of the group of four operating mines comprising the Northern Rhodesian Copperbelt. The ore deposits at Mufulira are on the limb of a large syncline striking NW.-SE. and dipping NE. at about 45 deg towards the Congo border. The host rocks are well-consolidated, highly-silicified, felspathic quarzites of the lower part of the pre-Cambrian Séries des Mines of the Katanga. The ore rocks are underlain, unconformably, by the older "Muva Series," in this case hard, green, metamorphosed quarzites. There are three superimposed orebodies, the first, or upper, orebody averaging 40-ft true thickness with a strike length of about 5000 ft, the second, or middle, orebody of about 50-ft true thickness with a strike length of about 6000 ft, and the third or lower orebody of around 60-ft true thickness with a strike length of 8000 ft. The orebodies are separated by varying widths of waste, or very low-grade ore, from a few feet up to 50 ft. The middle and lower orebodies are so close together for a strike length of 3000 ft that they are mined as one orebody. In all, the mineralized zone is about 200 ft in true thickness.

Jan 6, 1950

By Eugene B. Wilson

The development of coal-mines has kept pace with the facilities at command for ventilating and lighting. In fact, it was formerly • customary to leave unworked those mines, or portions of mines, in which naked lights could not be used without danger. Attention was then turned to the ventilation; but even with improved ventilation, the naked light was often unsafe. The new era in coal-mining dates, we may say, as far back as 1815, when Sir H. Davy and Mr. George Stephenson discovered the principle of the safety-lamp. Since then many improvements have been added to their lamps, but

Jan 1, 1885

By Robert Forsyth

In working the Bessemer process, the bottom of the converter has always been a source of trouble and annoyance, and the subject of more experiments, probably, than any other part of the complex mechanism called a Bessemer plant. This will not appear remarkable when the duties this important piece of refractory material has to perform are taken into consideration. In the first place, by means of the tuyeres, it delivers at a high pressure the air necessary for the conversion of the bath of metal, and has then to resist the intense

By F. W. Libbey

Jan 1, 1985

The first meeting of the Naval Consulting Board was held at the office of the Secretary of the Navy, Washington, D. C., on Oct. 6, 1915. The Board organized by electing Thomas A. Edison, Chairman, Peter Cooper Hewitt, First Vice-Chairman, William L. Saunders, Second Vice-Chairman, and Thomas. Robins, Secretary. All of these officers are members of the American Institute of Mining Engineers. The other members of the Board are given below, and those who are members of the Institute are marked with an asterisk: *W. R. WHITNEY MATTHEW B. SELLERS. L. H. BAEKELAND. HUDSON MAXIM. FRANK JULIAN SPRAGUE. HOWARD T. COFFIN. BENJAMIN C. LAMME. ANDREW J. RIKER. R. S. WOODWARD. HENRY A. WISE WOOD ARTHUR GORDON WEBSTER. ELMER A. SPERRY. A. M. HUNT. *BENJAMIN B. THAYER. ALFRED CRAVEN. *J. W. RICHARDS. *SPENCER MILLER. *LAWRENCE ADDICKS. WILLIAM LE Roy EMMETT.

Jan 12, 1915

By Howard M. Graff, Sidney C. Bouwer

The economics of mining has traditionally been viewed quite apart from the economics of blast furnace operations. It was realized, of course, that blast furnaces would operate best with good raw materials, but the shipping grade of ore, for example, was decided by a sort of collective bargaining process between the ore producers and the blast furnace operators. The mine operators had to keep their costs down, and were usually successful in convincing management that the ore in any particular deposit was endowed by nature with a certain iron content and that the mine grade could not be raised beyond a certain economic limit. The blast furnace operators would have liked a better grade, but as long as they were able to make a fairly good showing it was more or less accepted that they had to take the ore as it came. The mine operators were able to ship to the nation's blast furnaces thousands of tons of iron ore that would be completely unacceptable by present-day standards. As late as the early 1950's, the major steel companies were witnessing an actual decline in the iron content of their incoming ore supply as the mining companies mined progressively leaner material and upgraded it only enough to pass competitive market requirements

Jan 8, 1965

By E. C. Reed

Oil was discovered in Nebraska on Nov. I, 1939, when the Pawnee Royalty Company's Boice No. I well, about 3 miles west of Falls City (NE 1/4 NE 1/4, sec. 18, T.r N., R.16 E., Richardson County) was drilled into the Hunton formation but the develop-ment of the area took place during 1940. After a pumping test lasting 18 days, the Boice well stopped producing and failed to qualify for the State bonus of $ 15,000 offered for the first oil well to produce go bbl. per day for 60 consecutive days. On May 9, 1940, the Pawnee Royalty Company's Bucholz No. I well was completed about M mile southeast of the discovery well and flowed at the rate of about 330 bbl. per day, easily meeting the State bonus requirements. In addition to the discovery well, which later was reconditioned, and the bonus well, 28 producers were drilled in the Falls City field during 1940. Of these wells, 23 are in sec. 20, two are in the northern part 'of sec. 29, two in the southwestern part of sec. 17 and three in the eastern part of sec.

Jan 1, 1941