Underground chute tappers -- Arizona

This collection contains personal papers, minutes, agendas, membership lists, correspondence, conference materials, newspaper and journal articles, newsletters, interviews, and video and audio tapes documenting Don Shelton's work at Magma Copper Company between 1965 and 1998. Of particular interest are the materials documenting changes in the company and local unions at both of Magma's branches (San Manuel and Pinto Valley).