| Reference | {Deposit:: MINING MAGAZINE, FEBRUARY 1979, P. 110: SILVER MINING AT}{Deposit:: LAS TORRES.}{Deposit:: WORLD MINING, SEPTEMBER 1977, P. 78: GUANAJUATO GROUP}{Deposit:: REVIVES MEXICAN SILVER DISTRICT; FOUR MINES, NEW MILL.}{Reserve-Resource:: MINING MAGAZINE, JUNE 1976, P. 497: SILVER DEVELOPMENTS}{Reserve-Resource:: MOVE AHEAD IN MEXICO.} |