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a Paper Read Before the American Institute of Mining Engineers, Duluth Meeting, July, 1887: Revised to June, 1888

With Notes on the Principal Coal Mines

Traditional Mining Methods in Cornwall

Being the Experience and Observations of a Packer: What I Saw and Know of the Country, Its Traveled Routes, Distances, Villages, Mines, Trade and..

a Paper Read Before the American Institute of Mining Engineers, at the Toronto Meeting, July, 1907.