- Empire Mine State Historic Park
Infobox_protected_area | name = Empire Mine State Historic Park
caption = View down the main shaft at Empire Mine
location = Nevada County,
nearest_city = Grass Valley
lat_degrees = 39
lat_minutes = 12
lat_seconds = 23
lat_direction = N
long_degrees = 121
long_minutes = 2
long_seconds = 45
long_direction = W
area = 813.42 acres
established = 1975
California State Parks
Empire Mine State Historic Park is a state-protected mine and park in the Sierra Nevada Mountains in
Grass Valley, California. Since 1975, California State Parkshas administered and maintained the mine as a historic site. The Empire Mine is "one of the oldest, largest, deepest, longest and richest gold mines in California" [http://parks.ca.gov/?page_id=499] . Between 1852 until its closure in 1957, the Empire Mine produced 5.8 million ounces of gold, extracted from 367 miles of underground passages.
George D. Robertsdiscovered gold in a quartz outcropping which became the Ophir vein. As word spread that hard rock gold had been found in California, miners from the tin and copper mines of Cornwall, England, arrived to share their experience and expertise in hard rock mining. Particularly important was the Cornish contribution of a unique system of pumps, operated on steam, which emptied the depths of the mine of its constant water seepage. This enabled increased productivity and expansion underground. The Cornish provided the bulk of the labor force from the late 1870s until the mine’s closure eighty years later. William Bowers Bourn IIinherited the Empire Mine in 1887. [http://www.calgoldrush.com/travel/mine.html] With his financial backing and the mining knowledge of his younger cousin, George Starr, the Empire Mine became famous for its mining technology, while the grounds became known for their gardens, residences, and social clubhouse. The noise was a constant.
In 1929, at the recommendation of
Fred Searlsof Nevada City, Newmont Mining Corp. purchased the Empire Mine from Bourn. Newmont also purchased the North Star Mine, resulting in Empire-Star Mines, Ltd. The business was managed by Fred Nobs and later by Jack Mann. By the 1950s, inflation costs for gold mining were leaving the operation unprofitable. In 1956 a crippling miners strike over falling wages ceased operations. The mine was officially closed a year later on May 28, 1957when the last water pumps were shut and removed. In its final year of operation in 1956, the Empire Mine had reached an incline depth of 11,007 ft.
California State Parkspurchased the Empire Mine property to create a state historic park. The state park now contains 813 acres including forested backcountry. [http://www.ncgold.com/History/EmpireMine/history.html]
The Secret Room
During its operation, the Empire Mine had "The Secret Room." This room contained an accurate
scale modelof the entire mine. It was a valuable tool for mapping the shafts and stopes, spread out a mile deep and 2-1/2 miles wide under the surface of the ground. What was a tightly guarded corporate secret for nearly 100 years is now one stop on the guided tour.
On weekends from May through October, volunteers dressed in Edwardian clothing give living history tours of the Bourn Cottage, the 1890s country estate home of William Bourn, Jr., and the Mineyard, with demonstrations of mine operations.
The park's museum contains a scale model of the underground workings of the Empire/Star mine complex, exhibits of ore samples from local mines, a recreated Assay Office and a collection of minerals.
There are 13 acres of gardens to tour.
Empire Mine Park Association
The EMPA provides of the interpretive and educational goals of this state historic park through donations, visitor center sales, membership dues and special events. It has a very active volunteer group.
*Indian Ridge Trail
*Osborne Hill Loop
*Union Hill Trail
*Empire Mill and Mining Company (Gold Hill, Nev.), Giffin, O. G., Graves, W., & Nesmith, J. G. (1861). [http://worldcatlibraries.org/oclc/58745787 Empire Mill and Mining Company Collection] .
*Wagner, H. H. (1939). [http://worldcatlibraries.org/oclc/62746622 The Empire Mine, Nevada County : registered landmark #298] . California historical survey series : historic landmarks, monuments and state parks. Berkeley, Calif: State of California, Dept. of Natural Resources, Division of Parks.
*Carey, L. F. (1971). [http://worldcatlibraries.org/oclc/22260793&referer=brief_results The Empire Mine properties: 1122 acres in the Sierra Nevada foothills, Grass Valley, Nevada County, California] . Grass Valley, Calif: L.F. Carey, Realtor, Investment Properties.
*McQuiston, F. W. (1986). [http://worldcatlibraries.org/oclc/15244296&referer=brief_results Gold: the saga of the Empire Mine, 1850-1956] . [Grass Valley? Calif.] : Empire Mine Park Association.
*Steinfeld, C. C. (1996). [http://worldcatlibraries.org/oclc/54013416&referer=brief_results The Bourn dynasty: the Empire Mine's golden era, 1869-1929] . Grass Valley, CA: Empire Mine Park Association.
List of California state parks
* [http://content-backend-a.cdlib.org/view?docId=kt3v19n6jq&chunk.id=bioghist-1.7.4 Chronology from Online Archive of California]
* [http://parks.ca.gov/?page_id=499 Empire Mine State Historic Park official website]
* [http://empiremine.org Empire Mine official site]
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