Weekly reports of accomplishments, some correspondence, supply orders.
Biographical / Historical:
Copperopolis (once known as Copper Canyon) was founded in 1860, and the Union Copper mine was located there soon after. The Union Copper Company was formed in 1899, and it held these mines until 1909, when all the holdings of the Union Company were transferred to the Calaveras Company. Calaveras Consolidated Mining Company Ltd. operated until 1932.
Related Archival Materials:
Additional papers are located in the Stonehill Industrial History Center, Stonehill College, Easton, Massachusetts.
Donated by Paul and Rachel Giorgianni to the National Museum of American History's Division of Agriculture and Natural Resources in 1987.
Unrestricted research access on site by appointment.
Collection items available for reproduction, but the Archives Center makes no guarantees concerning copyright restrictions. Other intellectual property rights may apply. Archives Center cost-recovery and use fees may apply when requesting reproductions.
El Pangui. Cordillera del Cóndor region, along road from Tandaime to Valle del Quime, along right bank of Río Quime, 4.2 km from bridge over Rio Waiwaime near headquarters of Ecua-Corriente copper mine., Zamora-Chinchipe, Ecuador, South America - Neotropics
Cerro Colorado, along road to old copper mine development N of San Felix, 18.6 mi N of bridge over river near San Felix, 6.6. mi beyond Chame and road to Escopeta., Chiriqui, Panama, Central America - Neotropics
El Pangui. Cordillera del Cóndor. Upper watershed of Río Wawaime (tributary of Río Quimi). Ridge above site of proposed EcuaCorriente open-pit copper mine., Zamora-Chinchipe, Ecuador, South America - Neotropics