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US 4,194,902 - Pig iron or other molten lion is effectlvely desulfurized by treatment with a mixture preferably about 60% by weight commercial grade calcium carbide, 30% dried limestone diamide, and the remainder bituminous coal. Equivalent desulfurization is obtained using a significantly lesser amount of desulfurizer than in previous mixture of calcium carbide and limestone diamide W Gmohling, assigned to SKW Trostberg AG. Mar 25, 1980. 3 pp. (75-55) Filed: 9-12-78 (941,659) Priority. West Germany, 9-15-77 (2,741,588). Same. British 2,008,153, dated May 31, 1979.

Jan 1, 1982

By M. P. Nackowski

Geological engineering expanded its role and significance during 1966 in the areas of construction, raw materials exploration and inventory, water supply and pollution, mechanical properties of earth material and regional environmental planning. Efforts varied immensely in scope and magnitude, in simplicity, difficulty and importance. Observations, measurements, and analysis encompassed both simple and sophisticated procedures. CONSTRUCTION Activities in construction ranged from preliminary to detailed evaluations of sites, development of preventative measures and designing corrective measures following construction failures. Most investigations concerned dam sites, highway locations and slope stability, building sites, tunnels and underground storage facilities.

Jan 2, 1967

ONE HUNDRED AND FOURTEENTH MEETING OF THE INSTITUTE, MONDAY, FEBRUARY 19, TO THURSDAY, FEBRUARY 22, INCLUSIVE, 1917 Committee on Arrangements DAVID H. BROWNE, Chairman LAWRENCE ADDICKS Louts D. HUNTOON E. MALTBY SHIPP PERCY E. BARBOUR H.A. MEGRAW BRADLEY STOUGHTON GEORGE D. BARROW _ THOMAS T. READ EDWARD B. STURGIS KARL EILERS BURR A. ROBINSON ARTHUR L. WALKER F. T. RUBIDGE Summarized Program MONDAY, FEBRUARY 19 9:00 a.m. to 5.00 p.m. Registration at Institute Headquarters. , 10.00 a.m. Simultaneous Sessions on Geology and on Metallography.

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Jan 1, 1925

By F. R. Wadleigh

There are in commercial use today in the United States various classifications of coal, each based on one or more characteristics. The bases of these classifications may be described as follows: GeNeRaL Basis Examples 1. Geological By seams and basins (local). 2. Chemical By constituents, as determined by analysis—ash, volatilc, slilfur and hcating value. 3. Combustion Characteristics As frce-burning, smokeless, character of ash. 4. Carbonization Characteristics Coking, noncoking. 5. Physical Characteristics Splint, soft, hard, block. 6. Geographical States, Fields, Counties, Districts. 7. Sizes By dimension or name. 8. Company Names Producing or sales company names, as "C. C. B. Pocahontas," etc. 9. Trade Names, copyrighted or not 10. Uses Gas, steam, coking, locomotive, fuel, bunkers, etc. 11. Use Methods Stoker coal. 12. Pools (Tidewater Exchanges) Analyses Size Seams Railroads Uses Structure Districts There are also classifications founded on more than one basis, as follows: 1. Geographical and Geological. By locality of mines (State, District, County) and seam. Examples: Cambria County, Miller Seam, New River, Sewell Seam. 2. Geographical and Chemical. Alabama medium volatile. 3. Combustion Characteristics and Ash Content. Free-burning, red ash (anthra- cite). 4. Carbonization Characteristics and Analysis. Noncoking, high-volatile, low sulfur. 5. Physical and Carbonization Characteristics. Splint, noncoking. 6. Size and Use. ¾-in. gas coal; domestic sizes (prepared sizcs); stcam sizcs. 7. Company Name and Seam. Consolidation Co., Elkhorn. 8. Size and Analysis. Low-volatile run-of-mine; low-volatilc slack. 9. Sizes—size of screen and name. 6 by sin. lump. 10. Chemical and USP. High-volatile steam. 11. Geographical and Use. Youghiogheny gas. 12. District, Size and Use. Pittsburgh gas l¼-in. lump. ,

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