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Scientific American, Vol. 79, No. 14 (October 1898) (1898)

leaf 8

An illustration from Scientific American, Vol. 79, No. 14 (October 1898), 1898, leaf 8
asses in through the clip shown on the side of the cap. The capacity three, which was exploded on July 18, with results as of the mine herewith illustrated, which represents one shown in Fig. 1. of those which were used in the defense of Baltimore This group consisted of three mines, placed 100… … Fig. 1.—EXPLOSION OF A GROUP OF THREE GROUND MINES IN Fig. 2.—EXPLOSION 07 A DOUBLE MINE IN BALTIMORE HARBOR. BALTIMORE HARBOR. Charge of 225 to 250 pounds dynamite. Water 81 5 Feet deep. Column of watei 200 feet wide and 225 feet high. Base of water column, luO feet wide; height, 246 feet © 1898…

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