Black Diamond Mines Regional Preserve

Black Diamond Mines
U.S. National Register of Historic Places
U.S. Historic District
Nearest city:	Antioch, California
Coordinates:	37°57′1″N 121°51′25″W / 37.95028°N 121.85694°W / 37.95028; -121.85694Coordinates: 37°57′1″N 121°51′25″W / 37.95028°N 121.85694°W / 37.95028; -121.85694
Governing body:	Local
Added to NRHP:	October 02, 1991
NRHP Reference#:	91001425 [1]

The Black Diamond Mines Regional Preserve is an area located in Contra Costa County, California under the administration of the East Bay Regional Parks District. The Preserve includes the remains of several coal mines and the sites of five long gone coal mining towns. The towns were Nortonville, Somersville, Stewartville, West Hartley and Judsonville. The coal mined in these areas was of a low grade, but for a time in the 19th century, was the only readily accessible and economic source in California. In the first half of the 20th century, the Hazel-Atlas Glass Company operated a white silica sand mine in the area (separate from the coal mines) to supply its plant in Oakland.

[edit] References

[edit] External links

• ebparks.org - Black Diamond Mines Regional Preserve
• Nortonville

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