Minerals remained for the most part unworked, though the profitable coal fields and oil wells in Ferghana were used when disturbances in Trans-Caspia cut Turkestan off from the Baku oil, on which it relies entirely for its industrial life.
Charcot (1825-1893) in that great asylum for the wreckage of humanity - the Salpetriere - discovered an unworked mine of chronic nervous disease.
In a modified degree the same is true of the Indian fields; large supplies are unworked, but in several districts, especially about Raniganj and elsewhere in Bengal, workings are fully developed.
Similarly in Siberia and Japan there are extensive supplies unworked or only partially exploited.
Shows the quantity of coal still remaining unworked in the different coalfields at depths not exceeding 4000 f t.
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