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Scientific American, Vol. 39, No. 7 (August 1878) (1878)

leaf 7

An illustration from Scientific American, Vol. 39, No. 7 (August 1878), 1878, leaf 7
improvement. We must remember, first, that many 3 feet wide, and only 4 inches high, so that but little coal is coal is to undercut it, which the miner usually has to do of the most important branches of manufacture have been wasted as compared with that lost in consequence of hand- with his pick,… … goods at last find a regu- pable of working. lar and considerable sale The essential features of Fig. l.-THE LUCHNEB. MDriHG MACHINE. in England will finally this machine are the cutter yield important results as to the supply of other markets. cutting. It is stated that only six to eight minutes…

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