Latitude: 37°57'9"N
Longitude: 122°30'47"W
A former clay and shale pit operation located just N of plant, 1.1 km (3,700 feet) ENE of Greenbrae. Ruins of one kiln on site. Possibly also located in sec. 11.
References
Ver Planck, Wm. E., Jr. (1955), Mines, mineral resources and mineral industries of Marin County, California: California Journal of Mines and Geology, California Division of Mines (Report 51): 51(3): 252, 278, Pl. 4.
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