wing out the safety pin, so that the striker is the machine. The main frame consists of a 20-inch held in position by the copper shearing wire, as al- was prepared, 6% feet deep by 8 feet long and 3% feet I-beam laid on its side, at the rear end of which is ready described. The steel rod H fits… … A TONNEL-BOBIMtt MAtttln* WHICH CAN DB1VE AN B-F0QT TUNNEL IN BOCK WITHOUT BLASTING.
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