| Reference | {Deposit:: PURSER, W.F., METAL MINING IN PERU, PAST AND PRESENT,}{Deposit:: PRAEGER, PUBLISHERS, NEW YORK, 1971, P. 144.}{Deposit:: AIRGRAM FROM U.S. EMBASSY, LIMA TO DEPT. OF STATE, DEC. 21,}{Deposit:: 1979.}{Deposit:: AMERICAN METAL MARKET, APRIL 4, 1984.}{Deposit:: LATIN AMERICAN NEWS LETTER, VOL 9, NO. 5, P. 6.}{Deposit:: PRODUCTION COST UPDATE, 6/30/84, P.9.}{Reserve-Resource:: U.S. EMBASSY, INDUSTRIAL OUTLOOK REPORT-PERU-MINERALS, 1989,}{Reserve-Resource:: PART 1 NARRATIVE SUPPLEMENT, MAY 1990, P. 7.} |