Henry Cowell Lime & Cement Company Mine (Pacific Cement Aggregates Company), Concord, Contra Costa Co., California, USA
Latitude: 37°57'6"N
Longitude: 121°59'41"W
A former Ca mine/quarry located 4.3 km (2.6 miles) SE of Concord.
References
Laizure, Clyde McK (1927), Contra Costa County: California Journal of Mines and Geology, California Mining Bureau (Report 23): 23(1): 9.
Davis, Fenelon Francis & J.W. Vernon (1951), Mines and mineral resources of Contra Costa County, California: California Journal of Mines and Geology (Report 47): 47(4): 567-571.
Davis, Fenelon Francis and H.B. Goldman (1958) Mines and mineral resources of Contra Costa County. California Journal of Mines and Geology: 54(4): 572, Pl. 5.
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