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NEW MEMBERS The following list comprises the names of those persons who became members during the period Nov. 9, 1918, to Dec. 10, 1918. ALBERT, EDWARD J 235 E. Upsal St., Philadelphia, Pa. BARRY, D. A Supt. of. Mines, The Big Five Min. Co., Idaho Springs, Colo. BATON, GEORGE S., Cons. Min. Engr., Baton & Elliott, 2412 First National Bank Bldg., Pittsburgh, Pa. BAXTER, HAROLD ALEXANDER, Met. Engr. & Operation Supt., Tacony Ordnance Corpn., Philadelphia, Pa. BENNETT, JOHN S., Chem. and Min. Engr Copiap6, Chile, South America. BOWDEN, MALCOLM, Min. Engr.; Efficiency Engr., Elm Orlu Min. Co., Butte, Mont. BROWN, HAROLD C 2d Lieut., A. S. A. P. BROWN, THOMAS ALBERT, Min. and Met. Engr.; Supt., The Royal Tiger Mines Co., Breckenridge, Summit Co., Colo. BROWN, WALTER S., Investigator, New Jersey Zinc Co. (of Pa.), Palmerton, Pa. BURDETTE, R.. S Capt., Ord. Dept., U. S. A. CALLANDER, IRA C., Asst. Supt., Gauley Mountain Coal Co., Jodie P. 0., Fayette Co., W. Va. COLLINS, J. W., Foundryman, The Aluminum Casting's Co., "L" Plant, Cleveland, Ohio,

Jan 1, 1919

NEW MEMBERS The following list comprises the names of those persons who became members during the period of Aug. 10, 1917, to Sept. 10, 1917. ADKERSON, J. CARSON, Mgr., Stockwood Realty Corporation, Inc. Woodstock, Va. ARAKAWA, EIJI, Min. & Met. Engr., Min & Met. Dept., Imperial Univ., Kyoto, Japan. BAINS, THOMAS MELLOR, JR Major, Officers' Reserve Corps, Presidio, Cal. BARTON, Louis ARTHUR.. , . Vice-Pres., Adbar Development Co., Dewed, Minn. BLACKSTONE, ALEXANDER J....Asst. Engr., Honiestake Min. Co., Lead, SO: Dak. BOGARDUS, CHARLES EUGENE, Assayer & Chem., Bogardus Testing Laboratories 90 Columbia St., Seattle; Wash. BOISE, DAVID WELLS Chief Clerk, Chino Copper CO., Burley, New Mex. BREEDING, FRANK OWEN Assayer, Eden Min. CO., Bluefields, Nicaragua. BRUYERE, ALAN, Petroleum Geol., Producers' Oil CO., Box 96, Shreveport, La. BUTTS, ALLISON, Asst. Editor, The Mineral Industry, Lehigh Univ., So. Bethlehem, Pa. CALVERT, CLARENCE E Safety Engr., Anaconda Copper Min. CO., Butte, Mont. CHARLTON, HARRY.... Min. Engr, Commonwealth Edison CO., Taylorville, 111. CLAGUE, HERBERT NADEN, Surveyor.. Duncan, V. l., British Columbia, Canada. CLOSE, FREDERIC BAGLEY The Rampart, Los Angeles, Cal. COLLIER, DAVID HENDERSON, Mine Supt., Thumb, Butte Mines Co., Kingman, Ariz.

Jan 10, 1917

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

[Abbott, Jay Union Supply Co., 7458 So. Jackson St., Denver, Colo. 80122 Achziger, Ronald H Midwest Rubber & Supply Co., 6404 E. 39th Ave., Denver, Colo. 80207 Acre, Lee Dorchester-Colomine, 2944 Hwy 6 and 24, Grand Junction, Colo. 81501 Adams, Robert W Energy Fuels Corp., 3 Park Central, Suite 900, Denver, Colo. 80202 Adams, Dell H Consolidation Coal Co., Consol Plaza, 1800 Washington Rd., Pittsburgh, Pa. 15241 Adams, Douglas K General Electric Company, P.O. Box 2331, Denver, Colo. 80201 Adams, E. E Armco Steel Corp., Box 53, Parker, Colo. 80134 Ahlborg, William Joy Mfg. Co., 26 Sedgwick Dr., Englewood, Colo. 80110 Albrecht, Wayne H North American Coal Corp., Kirkwood Office Tower, Bismarck, N.D. 58501 Albrechtsen, Ray H. Mountain States Resources Corp., 1399 So. 700 East, Suite 11, Salt Lake City, Utah 84105 Alke, R. J Westinghouse Elec. Corp., 55 West 5th Ave., Denver, Colo. 80204 Allen, Thomas S Construction Machinery, Inc., 6121 Clermont, Commerce City, Colo. 80022 Allison, Thomas W Gullick Dobson International, 603 Parkway View Dr., Pittsburgh, Pa. 15205 Allmendinger, James W Falkirk Mining Co., P.O. Box 731, Riverdale, N.D. 58565 Almarez, John Jeffrey Mfg. Div., Dresser Industries, 720 So. Colorado Blvd., Denver, Colo.80222 Althouse, John G Coteau Properties Co., 2400 Astronaut Dr., Bismarck, N.D. 58501 Amundson, Adolph L. Western Slope Carbon, University Club Bldg., Suite 2240, Salt Lake City, Utah 84111 Anderson, Andy Power Motive Corp., 5000 Vasquez Blvd., Denver, Colo. 80216 Anderson, Carl L Industrial Screen & Maint., Inc., 1680 Sherrelwood Dr., Denver, Colo. 80221 Anderson, Charles W. R. Stamler Corp., 600 Main Street, Millersburg, Ky. 40348 Anderson, Daven Energy Engineering, Inc., P.O. Box 33, River Forest, Ill. 60305 Anderson, Forrest S Anderson Mavor (U.S.A.) Ltd., 303 Progress St., Cranberry Ind. Park, Zelienople, Pa. 16063]

Jan 1, 1979

[Abbott, Jay Union Supply Co., 7458 So. Jackson Street, Littleton, CO 80122 Achziger, Ronald H Midwest Rubber & Supply Co., 6404 E. 39th Ave., Denver, CO 80207 Acre, Leland H Dorchester Coal Co., 2795 Skyline Ct., Grand Junction, CO 81501 Adams, Dell H Consolidation Coal Co., Consol Plaza, 1800 Washington Rd., Pittsburgh, PA 15241 Adams, Robert W Energy Fuels Corp., 3 Park Central, Suite 900, Denver, CO 80202 Adams, Douglas K General Electric Co., P.O. Box 2331, Denver, CO 80201 Adams, William R ATW, Inc., 760 Three Fins, Dr. #106, Murray, UT 84107 Adsero, Richard Falkirk Mining Co., Box 1024, Washburn, NO 58577 Afflect, Robert S Anderson Mavor (U.S.A.), Ltd., 303 Progress Street, Zelienople, PA 16063 Agee, Pete Driltech, Inc., P.O. Box 338, Alachua, FL 32615 Ahlborg, William Joy Mfg. Co., 26 Sedgwick Dr., Englewood, CO 80110 Ainscough, Harlen R D. H. Emling Co., 5500 S. Syracuse Cr. #118, Englewood, CO 80111 Aitken, Don Goodyear Tire & Rubber Co., Box 15256 Trontwood, Spokane, WA 99215 Alexander, Doug A C. W. Silver Co., Inc., 761 So. 7th, Grand Junction, CO 81501 Alison, David R Amoco Minerals Co., 6900 S. Yosemite St., Suite 150, Englewood, CO 80112 Alke, R. J Westinghouse Elec. Corp., 55 West 5th Ave., Denver, CO 80204]

Jan 1, 1981

[ADAMS, JOHN P. 0. Box 560-No. 6, Rock Springs, Wyo. ADDISON, HERBERT Big Horn Collieries Co., Colo. Bldg., Denver, Colo. ALEXANDER, JOHN 825 South Gaylord St., Denver, Colo. ALLAN, DAVID Gorham, Colo. ALLEY, GERALD 1340 Steele St., Denver, Colo. AMBLER. J. B c-o Ambler & Riter. Kearns Blde.. Salt Lake Citv. Utah ANDERSON, A. E. Midland Savings Bldg., Denver, Colo. ANDERSON, ARTHUR E...Colo. Utilities Corp., 730 Equitable Bldg., Denver, Colo. ANDERSON. FRANK Crosb Wyo. APPERSON, A. B Tramway Bldg., Denver, Colo. ARNOLD, G. O .Oak Creek, Colo.]

Jan 1, 1930

[ADDISON, HERBERT Big Horn Collieries Co., Colo. Bldg., Denver, Colo. ALEXANDER, JOHN 825 So. Gaylord St., Denver, Colo. ALLAN, DAVID Lafayette, Colo. ALLEN, JOHN Ludlow, Colo. ALLEY, GERALD Box 1920, Denver, Colo. ALLISON, ARCHIE Box 562, Walsenburg, Colo. ALLISON, D. S 1331 Roberta St., Salt Lake City, Utah AMBLER, J. B c-o Ambler & Riter, Kearns Bldg., Salt Lake City, Utah ANDERSON, A. E 403 Ideal Bldg., Denver, Colo. ANDERSON, FRANK Crosby, Wyo. ANDREWS, SAM Box 91, Walsenburg, Colo. ANGUS, WILLIAM -o B. W. Snodgrass, 1575 Lafayette St., Denver, Colo. APPERSON, A. B Tramway Bldg., Denver, Colo. ARMSTRONG, C. D 420 U. S. Natl. Bank Bldg., Denver, Colo.]

Jan 1, 1926

[Abbott, Jay Union Supply Co., 5460 Colo. Blvd., Denver, Colo. 80022 Achziger, Ronald H Midwest Rubber Co., 6404 E. 39th Ave., Denver, Colo. 80207 Adams, Bob Energy Fuels Corp., Box G, Steamboat Sprlngs, Colo. 80477 Adams, David Empire Energy Corp., Box 68, Craig, Colorado 81625 Adams, Dell H Consolidation Coal Co., 3300 One Oliver Plaza, Pittsburgh, Pa. 15222 Adams, Douglas K General Electric Co., P.O. Box 2331, Denver, Colorado 80201 Adams, Kenneth L Arch Mineral Corp., 33 Carnation, Belleville, Ill. 62221 Ahlborg, William Joy Mfg. Co., 1911 Denver Club Bldg., 518-17th St., Denver, Colo. 80202 Albert, Darrell Safety Appliances Co., 400 Penn Center Blvd., Pittsburgh, Pa. 15235 Albrechtsen, Ray H Mountain States Resources Corp., 1399 So. 700 East, Suite 11, Salt Lake City, Utah 84105]

Jan 1, 1975

[ALLISON, D. S.. ...................... ,1331 Roberta St., Salt-Lake City, Utah AMBLER, J. B.. ........ c-o Ambler & Riter, Kearns Bldg., Salt Lake City, Utah ANDERSON, A. E.. ................ ,403 Midland Savings Bldg., Denver, Colo. ANDERSON, ARTHUR E.. .. .Colorado Utilities Corp., Steamboat Springs, Colo. ANDERSON, FRANK ........................................... Crosby, Wyo. ANGUS, WILLIAM.. ........... .99 South Downing St., Apt. 204, Denver, Colo. APPERSON, A. B.. ............................ .Tramway Bldg., Denver, Colo. ]

Jan 1, 1928

[Adams, Frank E U.S. Steel Corp., 919 Kearns Bldg., Salt Lake City, Utah Alger, Van Kaiser Steel, Sunnyside, Utah Allan, Andrew Thompson Creek Coal &Coke Corp., Glenwood Springs, Colo. Allen, Earl W Mine Safety Appliances Co., 257 Rio Grand St., Salt Lake City, Utah Allen, Thomas Chief Coal Mine Inspector, Colorado, Argonaut Hotel, Denver 2, Colo. Anderson, Merlynn D U.S. Fuel, P.O. Box 5022, Dragerton, Utah Anderson, Nephi W Book Cliffs Coal Co., Dragerton, Utah Ankeny, Marling J Bureau of Mines, 5308 Roosevelt St., Bethesda, Md. Arentzen, E. M Lee-Norse Co., Charleroi, Pa. Arentzen, L. E Lee-Norse Co., 2975 18th St., Boulder, Colo.]

Jan 1, 1959

[Adams, Dell H Consolidation Coal Co., 43 Denver Tech Center, Englewood, Colo. Adams, Douglas K General Electric Co., Box 2331, Denver, Colo. Adams, Kenneth L Peabody Coal Co., 33 Carnation Dr., Belleville, Ill. Aggen, Marshall J Marathon LeTourneau Co., Rt. 4, Box 1188, Henderson, Texas Ahlborg, William Joy Mfg. Co., 580 Denver Club Bldg., Denver, Colo. Albrechtsen, Ray H Mt. States Resources Corp., 2330 So. Main, Salt Lake City, Utah Alford, Eugene C Pittsburg & Midway Coal Mining Co., 2025 TenMain Center, Kansas City, Missouri Allen, Earl W Mine Safety Appliance Co., 5708 East 7th St., Tucson, Arizona Alston, George Mine Safety Appliances Co., 400 Penn Center Blvd., Pittsburgh, Pa. Amerman, Richard W Utah International, Inc., Box 155, Fruitland, New Mex. Anderson, G. A Walker Bank & Trust Co., Drawer M, Price, Utah Anderson, John S Utah International, Inc., 550 California St., San Francisco, Calif. Anderson, Robert Mine Safety Appliances Co., 1881 West North Temple, Salt Lake City, Utah]

Jan 1, 1973

[Adams, Leonard E .................... 8 19 Newhouse Bldg., Salt Lake City, Utah Adams, V. H ............................. 422 E. San Miguel, Colorado Springs, Colo: Allen, Earl W ........................... 2636 S. Gilpin St., Denver 10, Colo. Allen, Thomas ......................... State Coal Mine Inspector, State Office Bldg., Denver, Colo. Ambler, J. B .............................. P. 0. Box 591, Denver, Colo. Andrew, William . Boulder Valley Coal Co., Louisville, Colo. Apperson, A. B. .................... Brown Hotel, Denver, Colo. Arnold, G. O. ........................ Dawson, New Mexico Audin, Abel .......................... Somerset, Colo. Audin, Clement, Jr ................... Paonia, Colo.]

Jan 1, 1947

[Allan, Andrew Thompson Creek Coal & Coal Corp., Glenwood Springs, Colo. Allen, Earl W Mine Safety Appliances, 257 Rio Grand St., Salt Lake City, Utah Allen, Louis B C. F. & I. Corp., P.O. Box 1738, Salt Lake City, Utah Allen, Thomas Chief, State Coal Mine Inspector, Colorado, Argonaut Hotel, Denver Ambler, J.B P.O. Box 591, Denver., Colo. Anderson, A. R Jeffrey Mfg. Co., Columbus, Ohio Anderson, Merlynn D U. S. Fuel Co., Hiawatha, Utah Anderson, Nephi W Books Cliffs Coal Co., Dragerton, Utah Arnston, E. K Standard Oil Co., 4601 West 26th Ave., Denver 12, Colo. Audin. Clement, Jr Paonia,Colo.]

Jan 1, 1957

[Andrew Allen Glenwood Springs, Colorado C. S. Allen 211 Utah Oil Building, 10 West Broadway, Salt Lake City 1, Utah Earl W. Allen 257 Rio Grande Street, Salt Lake City, Utah Louis B. Allen 411 Walker Bank Building, Salt Lake City, Utah Thomas Allen State Coal Mine Inspector of Colorado, Argonaut Hotel, Denver, Colorado J. B. Ambler P. O. Box 591, Denver, Colorado Nephi W. Anderson Dragerton, Utah F. F. Argust 270 High Street, Pueblo, Colorado E. K. Arnston : 4601 West 26th Avenue, Denver 12, Colorado Abel Audin Somerset, Colorado Clement Audin, Jr Paonia, Colorado Ralph Andin P. 0. Box 285, Somerset, Colorado ]

Jan 1, 1955

Due to the advanced date of publication of this Bulletin, the lists of new members, changes of address, etc., for the month of July will be printed in the September number of the Bulletin. CANDIDATES FOR MEMBERSHIP. The following persons have been proposed during the period July 1-20, 1913, for election as members of the Institute. Their names are published for the information of members and associates, from whom the Committee on Membership earnestly invites confidential communications, favorable or unfavorable, concerning these candidates. A sufficient period (varying in the discretion of the Committee, according to the residence of the candidate) will be allowed for the reception of such communications, before any action upon these names by the Committee. After the lapse of this period, the Committee will recommend action by the Council, which has the power of final election.

Jan 8, 1913

NEW MEMBERS. The following list comprises the names of those persons who became members during the month of September, 1913: Members. ANDERSON, ANDREW P., Min. Engr 908 Story Bldg., Los Angeles, Cal. ANDROS, STEPHEN 0., Min. Engr University of Illinois, Urbana, Ill. BECKETT, PERCY G., Min. Engr Globe, Ariz. BLAIR, THOMAS S., JR., Prest. Blair Engrg. Co 343 S. Dearborn St., Chicago, Ill. BOYLE, HARRY, Min. Engr S07 Lowman Bldg., Seattle, Wash. BRADEN, EUGENE B., Vice-Prest., Selby Smelting & Lead Co., Merchants Exchange Bldg., San Francisco, Cal. CHALMERS, JOHN W., Min. and Elec. Engr., Morro Velho, Villa Nova de Lima, Honorio Becalho Minas Geraes, Brazil, So. America.

Jan 10, 1913

NEW MEMBERS. The following list comprises the names of those persons who became members during the month of November, 1913: Members. AGNEW, JOHN L., Gent Supt Copper Cliff, Ont., Canada. BAILEY, FRANK C, Mine Mgr 2003 IV. Snito Ave., Spokane, Wash. BATEMAN, ALAN M., Min. Geol.,Care L. C. Graton, Geological Museum, Cambridge,Mass. BERRYHILL, JAMES G.,Atty.-at-law and Mining Investor, Equitable Bldg., Des Moines, Ia. CARTLIDGE, OSCAR, Mgr. State Mine Rescue Station, 452 W. South Grand Ave.. Springfield. Ill.

Jan 12, 1913

Jan 1, 1907

By Rory Cameron, Chuck Edwards

"Stringent environmental performance criteria and regulations, and the desire to minimize water use have made membrane-based treatment and separation processes an attractive option. This has lead to many advances in all aspects of the technology. Membrane separation processes have found application in sea water desalination, brackish water treatment, decontamination of ground water, and wastewater treatment. Development of membranes with better resistance to harsh feed conditions has created new opportunities for the broader application of membrane separation technologies to mineral processing streams. There are examples in mineral processing operations, including treatment of acidic drainage, pre-concentration of pregnant leaching solution in heap leaching operations, separation of acids and metals from waste streams and intermediate process streams, as well as gold and cyanide recovery from a heap leaching operation. This paper provides a brief overview of membrane technology principles, followed by a discussion of current membrane technology applications relevant to the mining and mineral processing industry. The paper further explores the potential for the application of membrane separation as an integrated component in mineral processing operations.INTRODUCTION Increased regulatory pressures, emphasis on water conservation, and scarcity of water in arid regions have resulted in substantial changes in industrial practices in recent years. As a result, many industries have become more open to adopting innovative technologies such as membrane separation. The mining industry, which is typically very conservative, has adopted membrane separation as an effective end-of-pipe solution for effluent and acidic drainage (AD) treatment; however, its use as an integrated component in plant operations has progressed more slowly. With increasingly stringent environmental regulations coupled with the desire for low- and zero-discharge operations, the use of membrane separation technology for achieving acceptable environmental performance may be unavoidable in the future. The relatively small footprint requirement, versatility, and modular construction of membrane separation units facilitate their introduction into existing processes with a suitable feed stream. Membrane separation is not a stand-alone process that provides the ultimate solution to water and wastewater treatment; however, it can often be economically added to conventional waste treatment plants to increase throughput and/or decrease contaminant output (Mortazavi, 2008). Although membrane separation technology has become an established separation technique that is widely used in drinking water production and other industries, it is still considered an emerging technology within the mining and mineral processing industry. This technology offers many potential benefits such as clean water recovery from wastewater, significant reduction of volume requiring conventional treatment, decreased usage of reagents, and acid recovery, all of which lead to increased treatment efficiencies and lower reagent consumption. This could translate to smaller and more efficient plants with lower capital and operating costs and lower environmental impacts. Plant expansion may be facilitated by incorporating a membrane separation unit operation in order to utilize existing treatment systems at higher throughputs."

Jan 1, 2012

By Peter K. Eriksson

Nanofiltration is very efficient in separating heavy metals from water solutions, even if they contain strong acids. Desalination System, Inc., has many years of experience in this area, and this paper deals with three different such cases. The first case deals with concentrating the heavy metals in the pregnant leach solution from a copper dump leaching site with a surplus water problem. The increased copper concentration in the pregnant leach solution increases the capacity of the following copper extraction stage. The nanofIltration permeate is polished with a biomass adsorption column to remove the small amounts of remaining heavy metals, before being discharged. This method eliminates sludge handling and disposal, which are quite costly with the alternative precipitation process. In the second case, a complicated precipitation method was used to remove heavy metals from the waste stream of a specialty metals manufacturer. Nanofiltration was installed to increase the metals concentration four times, which greatly simplified the precipitation process. The chemical consumption and sludge production decreased by more than 80 percent, and the labor cost decreased by 66 percent. In the third case, nanofiltration was used to purify waste sulfuric acid solutions containing heavy metals, to meet the specifications for technical grade acid. Sulfuric acid concentrations above 30 weight percent were successfully purified in a multiple pass membrane system.

Jan 1, 1996