Transactions . I Scale, about 131 Feet (40 Metres) to 7 Inch. Fig. 17,—Plan showing Working of Lifts in Grande Couche. Fig. 18.—Showing Lifts en direction Scale, aoout 65\ Feei_f_20 Mezres±zo 7 Inch. Fig. 16.—Plan showing Working of Lifts in Grande Couche. ?mm.

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Keywords: ., bookcentury1800, booksubjectmechan, booksubjectmineralindustries