Topics covered include: Lowell and Currier pioneer family life in Arizona; working in father's mines during Depression years; Arizona School of Mines, 1945-1949; mine engineer for ASARCO, 1949-1951; geologist, AEC, 1951-1954; a year at Stanford University; exploration geologist, Ranwick, Southwest Ventures, Utah Construction, 1955-1959; independent consultant from 1960; discusses developing theory of concentric zoning of porphyry copper desposits, alliances with international mining companies; problems in business in Latin America, negotiations with Barrick for sale of la Pierina; associated with major mine discoveries: Kalamazoo extension, Vekol Hills, Casa Grande West,AZ; Escondida, Zaldivar, San Cristobal, Leonor, Chile; Los Pinos, Los Calatos, Paron, La Pierina, Peru.