References
BEAL, J. V., 1969, COPPER IN THE ANDES: MIN. ENG., 21:10:59-HOLLISTER, V., 1975, REGIONAL CHARACTERISTICS OF PORPHYRY CODEPOSITS OF S. AMERICA: MIN. ENG. 25:8:51-56NIGHTINGALE, W.G., 1975, MINING INTERNATIONAL YEAR BOOK: FINTIMES LTD., LONDON, ENGLAND, PG. 217.ECON.GEOL.,VOL.68,NO.1,P.2E/MJ INTERNATIONAL DIRECTORY OF MINING AND MINERAL PROCESS-ING, 1978, P. 278.PERSONAL CORRESPONDENCE, MARCH 15, 1978, SALVADOR MINE,CORPORACION NACIONAL DEL COBRE DE CHILE (CODELCO - CHILE),HUERFANOS 1189 8TH FLOOR, SANTIAGO, SANTIAGO, CHILE. COPYON FILE AT U. S. BUREAU OF MINES IN DENVER, COLORADO.SUTULOV, A., COPPER PORPHYRIES: SAN FRANCISCO, MILLER-FREEMAN PUBLICATIONS, INC., 1975, P. 32-33, 67, 76-77,79, 123, 141, 150, 155, 157, 159, 163-164.HOLLISTER, V. F., GEOLOGY OF THE PORPHYRY COPPER DEPOSITS OFTHE WESTERN HEMISPHERE: NEW YORK, THE AMERICAN INSTITUTEOF MINING, METALLURGICAL, AND PETROLEUM ENGINEERS, INC.,1978, P. 6, 8, 12-13, 17, 20, 187, 195.BOWEN, R, AND GUNATILAKA, A., COPPER: ITS GEOLOGY AND ECO-NOMICS: NEW YORK, JOHN WILEY AND SONS, INC., 1977,P. 41-42, 80, 90, 110.WORLD MINING, HIGH COST ENERGY AFFECTS CHILEAN COPPER MINES:V. 29, NO. 6, 1976, P. 42-43.MINING JOURNAL, CHILE'S COPPER RESOURCES: V. 289, NO. 7407,1977, P. 101.SUTULOV, A., NORMALIZATION OF COPPER PRODUCTION IS KEY TOCHILE'S DRIVE FOR ECONOMIC RECOVERY: ENGINEERING ANDMINING JOURNAL, V. 175, NO. 2, 1974, P. 72-75.ENGINEERING AND MINING JOURNAL, THIS MONTH IN MINING: HUGECOPPER RESERVES ASSURE CHILE'S POSITION AS WORLD PRO-DUCER: V. 178, NO. 9, 1977, P. 36, 41.MINING JOURNAL, CHILEAN COPPER OUTPUT UP. VOLUME, NUMBER,YEAR, AND PAGE ARE UNKNOWN.MINING JOURNAL, CHILE: FOUR YEARS ON: VOLUME, NUMBER,YEAR, ARE UNKNOWN.MINING MAGAZINE, CHILEAN MINING NATIONALISATION: V. 124,NO. 3, 1971, P. 225.MINING MAGAZINE, 1079 MINES ACCOUNTING FOR 90 PER CENT OFALL OUTPUT OTHER THAN COAL: CENTRAL AND SOUTH AMERICA:V. 140, NO. 1, 1979, P. 55.MINING MAGAZINE, 1029 MINES ACCOUNTING FOR 90 PER CENT OFV. 125, NO. 3, 1971, P. 253, 257.WORLD MINING, WHAT'S GOING ON IN WORLD MINING: CHILE:PRIVATE OWNERSHIP OF MINES ENCOURAGED: V. 32, NO. 4,1979, P. 93.SUTULOV, A., CHILEAN COPPER: ENGINEERING AND MINING JOUR-NAL, V. 167, NO. 7, 1966, P. 71-76.MINING MAGAZINE, 1036 MINES ACCOUNTING FOR 90 PER CENT OFALL OUTPUT OTHER THAN COAL: SOUTH AMERICA: CHILE:V. 121, NO. 3, 1969, P. 241, 257.WORLD MINING, WHAT'S GOING ON IN WORLD MINING: NEW STUDYINDICATES VAST SIZE OF CHILEAN COPPER RESERVES CONCENTRA-TED IN 11 PORPHYRY DEPOSITS: V. 30, NO. 10, 1977,P. 146-147.MINING MAGAZINE, CENTRAL AND SOUTH AMERICA: CHILE: V. 136,NO. 6, 1977, P. 474.MINING MAGAZINE, SOUTH AMERICA: CHILE: V. 119, NO. 3,1968, P. 228.WORLD MINING, CHILE COPPER MINERS SETTING PRODUCTIONRECORDS; GOAL 1,000,000 TONS: V. 27, NO. 12, 1974,P. 36-37.MINING JOURNAL, CHILE: COPPER OUTPUT RISING: V. 288, NO.7399, 1977, P. 453.MINING JOURNAL, CHILE: BOYCOTT MAY HIT COPPER: V. 291, NO.7478, 1978, P. 468-469.WORLD MINING CATALOG, SURVEY, AND DIRECTORY NUMBER, CHILE:V. 27, NO. 7, 1974, P. 180.ENGINEERING AND MINING JOURNAL, LABOR UNREST AT CHILE'SMINES: V. 179, NO. 10, 1978, P. 9.MINING MAGAZINE, CHILEAN COPPER: V. 138, NO. 2, 1978,P. 143.BENITEZ, F., HOW CHILE MAY DOUBLE ITS COPPER OUTPUT: EN-GINEERING AND MINING JOURNAL, V. 167, NO. 8, 1966, P. 71-77.MINING MAGAZINE, RECOVERY BEGINS FOR CHILEAN COPPER MINES:V. 129, NO. 5, 1973, P. 403.ENGINEERING AND MINING JOURNAL, CHILE'S CODELCO REVEALS COSTBREAKDOWN FOR 1977 AT KEY COPPER MINES: V. 179, NO. 5,1978, P. 45.MINING JOURNAL, CHILE: 1977 COPPER PRODUCTION: V. 290, NO.7440, 1978, P. 211.RIO TINTO MINING COST ANALYSIS SYSTEM, PERFORMANCE ANALYSIS:MAY 27, 1975, P. 348.BARRIGA, A., AND BANUS, H., COMPANIA DE COBRE EL SALVADOR:P. 265-294. SOURCE UNKNOWN.MINING ENGINEERING, EL SALVADOR: V. 21, NO. 11, 1969,P. 75-78.DIXON, C. J., THE EL SALVADOR PROPHYRY COPPER DEPOSIT-CHILE,IN ATLAS OF ECONOMIC MINERAL DEPOSITS: NORWICH, FLETCHERAND SON, LTD., 1979, P. 82-83.GUSTAFSON, L. B., AND HUNT, J. P., THE PROPHYRY COPPER DE-POSIT AT EL SALVADOR, CHILE: ECONOMIC GEOLOGY, V. 70,NO. 5, 1975, P. 857-912.MINING JOURNAL, LABOUR: CODELCO PLANS CRITICISED: V. 289,NO. 7408, 1977, P. 127.MINING JOURNAL, CHILE: CODELCO PLANS FOR LOWER GRADES: V.288, NO. 7396, 1977, P. 388.ENGINEERING AND MINING JOURNAL, CHILE'S CODELCO PONDERSMAJOR CHANGES IN ADMINISTRATION OF KEY COPPER MINES:V. 179, NO. 11, 1978, P. 36.FUENTES, R. A., IMPACT BREAKER IMPROVES SECONDARY BREAKAGEAT CHILE'S SALVADOR MINE: ENGINEERING AND MINING JOUR-NAL, V. 178, NO. 9, 1977, P. 164-165.CORPORACIAN NACIONAL DEL COBRE CODELCO CHILE, ANNUAL REPORT,1976.1979-1980 WORLD MINES REGISTER, COMPANIES BY COUNTRY:CHILE: SAN FRANCISCO, MILLER-FREEMAN PUBLICATIONS, 1979,ENGINEERING AND MINING JOURNAL, SALVADOR GEARS FOR MODESTEXPANSION, NOV.1979, PP. 86-98.MINING ENGINEERING, EL SALVADOR,APRIL 1960,PP.340-382.DETAILED ARTICLES ON MANY ASPECTS OF EL SALVADOR OPERATIONCORPORACION NACIONAL DEL COBRE DE CHILE, DIVISIONSALVADOR, EL SALVADOR, 1979ENGINEERING AND MINING JOURNAL, 5/80, P.43,47.MINING MAGAZINE, CODELCO-CHILE'S DEVELOPMENT PLANS. APRIL1981, P. 304-305.COPPER STUDIES, JULY 1983THE COPPER-MOLYBDENUM INDUSTRY IN CHILE CURRENT AND FUTURESTATUS. FEB., 1983 INTERNAL REPORT, P.5-9,41-54.ENGINEERING AND MINING JOURNAL, 11/84, P.44,47-49.SKILLINGS' MINING REVIEW, JUNE 20, 1987 P. 11,12.WORLD MINING EQUIPMENT, NOV. 1987 P. 42,43.WORLD MINING EQUIPMENT; CODELCO'S FIVE-YEAR INVESTMENTPLANS PRESAGE MAJOR EQUIPMENT BUYS, NOV. 1988, VOL. 12,NO. 11, P. 3.EMBASSY OF THE UNITED STATES TRIP REPORT, SALVADORDIVISION, MAY 25-26, 1988, 8 PAGES + ATTACHMENTS.LAML; CODELCO COPPER RESERVES UP, 3/31/88, VOL. 7, NO. 6,P. 6.MINING JOURNAL; CODELCO RESERVES UP, 3/11/88, P. 203.MINING JOURNAL; SALVADOR VOTE TAKEN, 9/8/89, P. 186.MINING JOURNAL; CHILEAN STRIKE VOTE, 9/1/89, P. 170.LATIN AMERICAN MINING LETTER, VOL 8, NO 18, 8/31/89, P.8.LATIN AMERICAN MINING LETTER, VOL 8, NO 17, 9/14/89, P.1.CHILE ECONOMIC REPORT, 1/89, P. 5.METALS WEEK, 9/18/89, P. 7.LATIN AMERICAN MINING LETTER, VOL 9, NO 11, 7/6/90, P.5.MINERALS FOR EXPORT, 6,7,8/90, P.26.DEPARTMENT OF STATE TELEGRAM #111519Z, SEPT. 1989.DEPARTMENT OF STATE TELEGRAM #151827Z, SEPT. 1989.MARSHALL, ISABEL L., CORRESPONDENCE, 5/26/92.METALS WEEK FOCUS; CHILE RETHINKS CODELCO, WHILE CODELCORETHINKS THE FUTURE, JULY 1992, P. 4-22.METALS WEEK, 6/1/92, P. 8.MINING ENGINEERING, 4/92, P.309.METALS WEEK, 5/9/94, P.7.CODELCO- CHILE, 1994 ANNUAL REPORT, P.42-44.LATIN AMERICAN MINING LETTER, 2/8/95, P.4,5.LATIN AMERICAN MINING LETTER, 3/11/95, P.3.LATIN AMERICAN MINING LETTER, V 14/N 11, 7/14/95, P.6.LATIN AMERICAN MINING LETTER, 3/31/88, VOL.7, NO.6, P.6LATIN AMERICAN MINING LETTER, 7/6/90, VOL. 9, NO. 11, P.5WORLD MINING EQUIPMENT, NOV. 1988, VOL. 12, NO. 11, P. 3.ECON. GEOL., V.68, NO.1, 1973, P.2.BARRIGA,A., AND BANUS,H., COMPANIA DE COBRE EL SALVADOR: CH.IN EL COBRE CHILENO,A.SUTULOV,ED.,CODELCO,1975,PP.265-294.