2nd Experiment.
Target:—2" thick, and 2' × 2-1/2', supported in a horizontal position on a substructure as above, but resting on four piles of 6" x 6" timber.
Torpedo:—8·9 lbs. of dynamite, enclosed in a wooden case 4" high, and 5" × 10". It was laid with one edge on the plate, the other edge 3" above the plate; same tamping as above.
Effect of explosion:—The plate broken into three pieces, and substructure crushed.