Vol. 2 Bk. 15 - PBR Operational Data

The 'Vol. 2 Bk. 15 - PBR Operational Data' file is part of the JABA, Inc. Tombstone mining records. JABA, Inc. held properties in the historic Tombstone mining district and conducted extensive mineral surveys for porphyry copper during the period of the late 1970s into the 1990s. Their explorations focused on the greater Tombstone Metallic Mineral District including the Tombstone Caldera, identified by Jim Briscoe in 1988. The collection contains geologic maps, geophysical maps, drilling records, claim information, technical reports, environmental analyses, correspondence, photographs and assays. The contents are grouped into binders by type and span approximately 60 feet of records.