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The Southern Mines of California

其他書名	Early Development of the Sonora Mining Region
出版	Grabhorn Press, 1930
URL	http://books.google.com.hk/books?id=x-bj5Cha8vIC&hl=&source=gbs_api

註釋"Covers early mining in the area; first trails, pack trains, express lines to the Southern mines; foreigners in the mines (prejudice, foreign miner's tax, Mexicans, abuse and continued agitation against the Chinese, etc.); government in the mines (military control, gentlemen's code, miners' meetings and courts, lynch law, Vigilance Committee, etc.); mining methods (placer mining, the Rocker, mining ditches, the Long Tom, quartz, pocket and hydraulic mining, etc.) Colombia; social life in the mines (Sunday in the mines, amusements, influence of women, etc.)--Bookdealer's description.