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AARONS, J. BOYD, Major. AGNEW, FRANK VANS. ALLEN, HERMAN H., Private, D Co., 8th Reserve -Engineers. AMBLER, HARRY A., Second Training Camp, Ft. Sheridan, Ill. BAINS, THOMAS M., JR., Major, Engineer Officers' Reserve Corps. BANKS, H. R., Lieutenant, Canadian Engineers, B. E. F. BARBOUR, PERCY E., Deputy Supt. (Captain), New York State Troopers; Captain, 22c1 Regiment, N. Y. N. G. BARLING, H. B., 1st Lieutenant, Engineer Officers' Reserve Corps. BARRETT, LESLIE P., Lieutenant, A. E. F., France. (Unattached.) BENSEL, J. A., Major, Engineers' Reserve Corps. BIGELOW, BRAXTON, Royal Engineers, B. E. F. BLOOMFIELD, E. C., Lieutenant. BORROW, F. K. BOWLES, MARTIN F., 2d Lieutenant of Infantry, Camp Funston, Kans.

Jan 10, 1917

YEAR OF ELECTION 1913 FRANK DAWSON ADAMS Montreal, Canada 1921 WILLIAM CUTHBERT BLACKETT Sacnston, Durham, England 1920 HENRY STURGIS DRINKER Merlon Station, Pa 1921 FERDINAND FOCH Paris, France 1922 FEDERICO GIOLITTI Torino, Ttaly 1888 HATON DE LA GOUPILLIERE Paris, France 1906 SIR ROBERT A HADFIELD London, England 1921 FRANK WILLIAM HARBORD London, England 1921 HEINRICH O HOFMAN Cambridge, Mass 1917 HERBERT HOOVER Stanford University, Cal 1919 ROBERT W HUNT Chicago, ILL 1915 JAMES' FURMAN KEMP New York, N Y 1905 HENRI LECHATELIER Paris, France 1921 C MCDERMID London, England 1913 EZEQUIEL ORDONEZ Mexico City, Mexico 1909 ALEXANDRE POURCEL Paris, France 1911 ROBERT H RICHARDS Boston, Mass 1906 JOHN E STEAD Middlesbrough, England 1907 CHARLES D WALCOTT Washington, D C

Jan 1, 1923

[YEAR OF ELECTION 1913. FRANK DAWSON ADAMS Montreal, Canada. 1921. WILLIAM CUTHBERT BLACKETT Sacriston, Durham, England. 1923. GELASIO CAETANI Washington, D. C. 1920. HENRY STURGIS DRINKER Merion Station, Pa. 1921. .FERDINAND FOCH Paris, France. 1922. FEDERICO GIOLITTI Torino, Italy. 1888. HATON DE LA GOUPILLIERE Paris, France. 1906. SIR ROBERT A. HADFIELD London, England. 1921. FRANK WILLIAM HARBORD London, England. 1921. HEINRICH O. HOFMAN Cambridge, Mass. 1917. HERBERT HOOVER Washington, D. C. 1915. JAMES FURMAN KEMP New York, N. Y. 1905. HENRI LECHATELIER Paris, France. 1921. C. MCDERMID London, England. 1913. EZEQUIEL ORDONEZ Mexico City, Mexico. 1909. ALEXANDRE POURCEL Paris, France. 1911. ROBERT H. RICHARDS Cambridge, Mass. 1907. CHARLES D. WALCOTT Washington, D. C.] [ ]

Jan 1, 1925

By J. B. Caine

This year we are extending our educational experiment of last year to new fields. The subject to be discussed at the educa¬tional meeting Saturday morning has nothing to do with melting or metallurgy, but is electricity and how we should use it in the operation of our furnaces. Your Committee feels that all of us could know more about the fuel we use to make our steel. May I emphasize that this session is separate from the rest of the program; there is no registration fee; and I want to urge all of you, especially those in this vicinity, to bring your assistants to this meeting. It will be well worth your while.

Jan 1, 1947

I-Institute of Metals Division* PAUL D MERICA, Chairman ZAY JEFFRIRS, Vice-chairman W M CORSE, Secretary Executive Committee T R FREEMAN JR, Local Section S SKOWRONSKI, Papers Committee R S ARCHER Non-ferrous Data Sheets H C JENNISON, Membership Committee C BAIN, Journal Committee L W SPRING Local Section Committee J R FREEMAN, JR, Chairman R J ANDERSON Cincinnati R L DOWDELL Minneapolis R S WILLIAMS, Boston H CLAMER, Philadelphia W A SCHEUCH, Chicago R F WOOD, New York Papers Committee S SKOWRONSKI, Chairman H S ARCHER-Aluminum W K FRANK-BRONZE F W HARRIS-Copper H BASSETT-BRASS G O HIERS-Lead Alloys M CORSE-White Nickel Base Alloys PAUL D MERICA-Nickel

Jan 1, 1923

YEAR OF ELECTION 1913 FRANK DAWSON ADAMS Montreal, Canada 1921. WILLIAM CUTHBERT BLACKETT Sacriston, Durham, England 1923 GELASIO CAETANI Washington, D C 1920. HENRY STURGIS DRINKER Merion Station, Pa 1921 FERDINAND FOCH Paris, France 1922. FEDERICO GIOLITTI . Torino, Italy 1888. HATON DE LA GOUPILLIERE Paris, France 1906 SIR ROBERT A. HADFIELD London, England 1921. FRANK WILLIAM HARBORD London, England 1921. HEINRICH O HOFMAN Cambridge, Mass 1917 HERBERT HOOVER . Washington, D C 1915 JAMES FURMAN KEMP New York, N. Y 1905 HENRI LECHATELIER Paris, France 1921. C. McDERMID London, England 1913 EZEQUIEL ORDONEZ Mexico City, Mexico 1909 ALEXANDRE POURCEL Paris, France 1911 ROBERT H RICHARDS Cambridge, Mass 1907 CHARLES D WALCOTT Washington, D C

Jan 1, 1923

[YEAR OF ELECTION 1913. FRANK DAWSON ADAMS Montreal, Canada. 1921. WILLIAM CUTHBERT BLACKETT Sacriston, Durham, England. 1920. HENRY STURGIS DRINKER Merion Station, Pa. 1921. FERDINAND FOCH Paris, France. 1922. FEDERICO GIOLITTI Torino, Italy. 1888. HATON DE LA GOUPILLIERE Paris, France. 1906. SIR ROBERT A. HADFIELD London, England. 1921. FRANK WILLIAM HARBORD London, England. 1921. HEINRICH' O. HOFMAN Cambridge, Mass. 1917. HERBERT HOOVE:Stanford University, Cal. 1919. ROBERT W. HUNT Chicago, Ill. 1915. JAMES FURMAN KEMP New York, N. Y. 1905. HENRI LECHATELIER Paris, France. 1921. C. MCDERMID London, England. 1913. EZEQUIEL ORDONEZ Mexico City, Mexico. 1909. ALEXANDRE POURCEL Paris, France. 1911. ROBERT H. RICHARDS Boston, Mass. 1906. JOHN E. STEAD Middlesbrough, England. 1907. CHARLES D. WALCOTT Washington, D. C.] [ ]

Jan 1, 1925

LARGEST known fluorspar deposits in the world are mined in southern Illinois (Hardin County), and northwestern Kentucky (Crittenden County). Colorado, New Mexico, Montana, and Utah are the principal western sources in the U. S. Rosiclare Fluorspar District Hardin County, Illinois The Rosiclare area is located in the southern part of Hardin County on the Ohio River where the Illinois Central Rd. branch line terminates and provides transportation. Fluorspar has been mined commercially in this area since 1870. Aluminum Co. of America and Rosiclare Lead & Fluorspar Co. are the two major producers in this area. Ozark-Mahoning Co. operates a concentrating plant in Rosiclare but the bulk of its ore is mined near the town of Cave-in-Rock.

Jan 1, 1958

Alan Stanley (Titanium Dioxide Analysis of Maclntyre Ore by Specific Gravity, P. 971) is currently head of the General Metallurgical Group of the National Lead Co. He has been with National Lead since 1946, after serving with the USAAF as a first lieutenant of engineers during World War II. A native New Yorker, he graduated from Virginia Polytechnic Institute in 1942 with a Bachelor of Science in Chemical Engineering. Since joining National Lead he has been a flotation supervisor, in the high tension pilot plant, and done sinter testing. He is an AIME member and presented one other paper before the Institute, Sintering Characteristics of Minus 65 and 20 Mesh Magnetite. Stanley plays the piano in his leisure moments.

Jan 1, 1952

By Robert H. Weber

Increasing acceptance of perlite products, chiefly in the fields of lightweight structural aggregates and thermal and acoustic insulation, has led to expanding market demands that have encouraged many new producers to enter the field. In some instances, however, the failure of these producers to anticipate the variable response of perlite to conventional processing methods has led to difficulty in establishing an economical flowsheet by which a predictable specification product could be obtained. It is not the writer's intent to provide a solution to these problems, but rather to summarize their nature. It is to be hoped that members of the industry who have hurdled some of these obstacles will document solutions arising from their experience.

Jan 2, 1955

AARONS, J. BOYD; Major. AGNEW, FRANK VANS. ALLEN, HERMAN H., Private, D Co., 8th Reserve Engineers. AMBLER, HARRY A., Second Training Camp,, Ft. Sheridan, Ill. BAINS, THOMAS M., JR., Major, Engineer Officers' Reserve Corps. BANKS, H. R., Lieutenant, Canadian Engineers, B. E. F. BARBOUR, PERCY E., Deputy' Supt. (Captain), New York State Troopers; Captain, 22d Regiment, N. Y. N. G. BARLING, H. B., 1st Lieutenant, Engineer Officers' Reserve Corps. BARRETT, LESLIE P., Lieutenant, A. E. F., France. (Unattached.) BENSEL, J. A., Major, Engineers' Reserve Corps. BIGELOW, BRAXTON, Royal Engineers, B. E. F. BLOOMFIELD, E. C., Lieutenant. BORROW, F. K. BOWLES, MARTIN F., 2d Lieutenant of Infantry, Camp Funston, Kans.

Jan 11, 1917

By Victor R. Cabrera

Expansion of Marcona Mining Co.'s operations in Peru several years ago increased the number of laborors and the variety of required jobs at the Company's facilities. This change made the former wage administration outdated, becoming evident by the increase of inequity grievances which threatened tile Company's good labor relations. Such a situation led Marcona to design a new wage plan based on a thorough job evaluation of all its laborer positions. The iron ore deposits, 15 miles inland from the ports of San Juan and San Nicolas, Peru, supply ore to steelmakers in the U.S., Europe and Japan. Marcona Mining Co. operates the mines under a long-term lease agreement with Peru.

Jan 7, 1964

By R. G. Knickerbocker

A most important research and development item on ferroalloys in the calendar year of 1949 was the increase of interest in the recovery of secondary manganese. Owing to the importance of manganese to the nation's welfare, it is Ferroalloys most necessary that all possible avenues of research and development on the recovery of this vital metal be investigated. The principal objective of this new development is to recover manganese from steel furnace slags. Steel furnace slags contain a total of approximately 772,000 tons of metallic manganese which is compared to the 680,000 tons of metallic manganese as ferromanganese that is estimated to be used by the steel industry, annually, at this time.

Jan 6, 1950

Alder, John W., Student, Mass. Inst. of Tech Cambridge, Mass. '38 Allen, Charles F Mines McFarland, Cal. '34 Anderson, Norman John, Student, South Dakota School of Mines Rapid. City, S. D. '32 Ansel, Gerhard, Student, Mass. Inst. of Tech Cambridge, Mass. '34 Arakelian, Haig Mark, Student, Inst. of Tech Cambridge, Mass. '34 Archer, George K., Student, Colorado School of Mines Golden, Colo. '34 Arnot, Paul H. 608 S. Acacia St., Compton, Cal. '31 Asel, Philip R., Student, Colorado School of Mines Golden, Colo. '32 Augenthaler, Robert L., Student, New Mexico School of Mines Socorro, N. M. '32 Augustine, Robert W. Address Wanted. '32. Austin, Robert B., Student, Univ. of Idaho Moscow, Idaho. '34

Jan 1, 1934

By A. H. Dierker

NEXT to the metal itself, molding sand is the most important raw material used in the manufacture of steel castings. There are no accurate, figures available but probably it would be safe to say that the average steel foundry uses approximately 1000 lb. of new molding sand per ton of castings produced. With untreated sands costing from two to four dollars (in some extreme cases it may run as high as eight or ten dollars) per ton delivered at the foundry siding, molding sand is an important item in the cost of making castings, and any information that may help to reduce this sand consumption should be of interest to the industry.

Jan 1, 1929

By L. A. Jr. Norman

ANOTHER chapter in the history of Mother Lode mining is being written by operations in the Old Eureka mine near Sutter Creek, Amador County, California. During a two-year period (1938-1939), 85,517 tons of ore averaging 0.62 oz. gold per ton were mined and milled, as compared to the production of approximately 210,000 tons of 0.315-oz. gold ore during the preceding seven years. This is a repetition of mining history in the Mother Lode, where a period of prosperity has followed a long period of lean production. The location of this new ore in the hitherto unproductive hanging-wall greenstones and its mining and geological developments are most interesting.

Jan 1, 1939

NEW MEMBERS The following list comprises the names of those persons who because members during the period Jan. 10, 1916 to Feb. 10, 1916. ATWATER, MAXWELL WANTON, Min. Engr Box 156, Basin, Mont. BARKDOLL, IVAN HARRY, Supt. of Mines, Old Dominion Copper Mill. & Smelt. Co., Globe, Ariz. BEAUDRY, WILLIAM A., Managing Director ....Stewart Mining Co., Kellogg, Ida. BRIGGS, CHARLES H Mill Supt., Admiralty Zinc Co., Miami, Ariz. CHURCH, L. C., Min. Engr Joplin, Mo. DAVIS, LLOYD J., Sales Engr; Ingersoll-Rand Drill Co., Joplin, Mo. DAVIS, SIDNEY H., Mgr Century Zinc Co., Joplin, Mo. DUGAN, J. H., Engr. and Contractor 65 N. Vine St., Hazleton, Pa. ELLIS, HUBERT INGERSOLL, Min. Engr., Bunker Hill & Sullivan MILL & Cons. Co., Kellogg, id..

Jan 3, 1916

[Abrahamson, Guy C., (5'43) 1st Lt., A.C., 0-880861, Base Weather Sta., Fairfeld-Suisun AAB, Suisun, Calif. Adam, Howard Wilbur, (S'46) 45 Eaton Ave., Woburn, Mass. Aguilar, Ruperto G., (S'43) Texas College of Mines, El Paso, Texas. Ainge, Ronald Farra, (S'43) Otago University, Dunedin, New Zealand. Albala, Américo, (S'44) Casilla 4106, Santiago, Chile. Albrecht, Theodore J„ (S'42) Pfc., Co. F, Syme Hall, Rm. 1, SCU 3421, ASTP, N. C. State College, Raleigh, N. C. Aldridge, E. E., Jr., (S'39) Box 58, Eagle Pass, Texas. Alfred, Robert M., (S'40) 25 South St., Brighton, Mass. Allan, Douglas H. W., (S'40) 460 Main St., E., Hamilton. Ont.. Canada.]

Jan 1, 1946

NEW MEMBERS The following list comprises the names of those-persons who became members during the month of January, 1914. Members ADIASSEWICH, ALEXANDER, Dept. of Commerce & Industry, 11, Nadejdinskaia, St. Petersburg, Russia. BEARD, JOHN W., Mine Supt., Lane-Rincon Mines, Inca, Temascaltepec, Mex., Mexico; BORCHERDT, WALTER 0., Supt The Bertha Mineral Co., Austinville, Va BREWSTER, BURT B., Sales Engr., Sullivan Machinery Co., 1127 Central National Bank Bldg., St. Louis, Mo: CHASE, ROGER E., JR., Assayer 3906 No. Baltimore St., Tacoma, Wash. CULBERT, J. VICTOR 7S4 Wellington St., London, Ont., Canada; DICKINSON, ALBERT W., Supt. Of Mines Bevier, MO. DODSON, T. M Mores, Colliery, Schuylkill Co., Pa FORREST, CHARLES N., Chem. Engr Maurer, N. J.

Jan 2, 1914

By T. D. Thomas

CONTENTS PAGE T. D. Thomas-Misfires in Anthracite Coal Mines 3 W. H. Forbes-Misfires in Bituminous Coal Mines 12 A. W. Worthington-Misfires in Non-metallic Mining (Limestone) 18 Misfires in Anthracite Coal Mines BY T. D. THOMAS,* LANSFORD, PA. (New York Meeting, February, 1929) IN THIS paper, major attention is given to misfires in mines where electric multiple shot-firing is the system used. Misfires are sometimes caused by one action or condition and at other times by a combination of two or more. They may be divided into two classes: (1) those caused by workers in the mines, (2) mechanical or manufacturer's causes. The second cause will be discussed first.

Jan 1, 1929