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Those physicians, who are inclined to invest rashly in mining stocks and enterprises, might find it advantageous to read this little book on "The Business of Mining." After describing in a more or less non-technical way the varieties of mines and methods of mining, the author devotes considerable space to a sensible discussion of mining as an investment, giving some needed attention to the genus "promoter," a study of whose methods may be of interest and value to the would-be investor.
The Business of Mining.. JAMA. 1912;LIX(25):2281. doi:10.1001/jama.1912.04270140085044