Category:Basalt Rock Company (Napa, California)
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This category has only the following subcategory.
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Categories:
- Shipyards in the United States
- Companies based in Napa County, California
- 1920 establishments in the United States
- Built in California in 1920
- Built in California in 1941
- Mining companies of the United States
- Mining in California
- Steel companies of the United States
- Companies established in 1920
- Companies disestablished in 1978