| Reference | {Deposit:: AMAX, INC., 1980, ANN. RPT.}{Deposit:: CUMMING, G.L., S.E. KESLER, AND D. KRSTIC, 1979, ISOTOPIC}{Deposit:: COMPOSITION OF LEAD IN MEXICAN MINERAL DEPOSITS, ECON.}{Deposit:: GEOL., VOL. 74, PP. 1395-1407.}{Deposit:: INDUSTRIAS PENOLES S.A. DE C.V., 1980, ANN. RPT.}{Deposit:: INDUSTRIAS PENOLES PURSUES AGGRESSIVE EXPANSION POLICY,}{Deposit:: AUG. 15, 1980, MINING JOUR., P. 136.}{Reserve-Resource:: ANON., FRESNILLO: FINDING WAYS TO EXPAND, E/MJ, NOV. 1980,}{Reserve-Resource:: P. 148.}{Reserve-Resource:: AME MINERAL ECONOMICS QUARTERLY MINE ANALYSIS, JUNE, 1993,}{Reserve-Resource:: P. 48.} |