| M - l | l | . Triple-strength exploder. |
| m |
| Charge | 1.5729 grammes. | ||
| Mercury fulminate. | Chlorate of potash. | ||
| Specification | 89.73 | 10.27 | |
Used on all other tests:
| M - 260 | l | . Double-strength exploder. |
| m |
| Charge | 0.9805 grammes. | ||
| Mercury fulminate. | Chlorate of potash. | ||
| Specification | 91.31 | 8.69 | |
This record includes powder used, weight of charge, swing of mortar, and unit disruptive charge, the latter being the charge required to produce a swing of the mortar equal to that produced by ½ lb. (227 grammes) of 40% dynamite, or 3.01 in.
7.—Record of Tests.
Tests Nos. 1 to 5 in Gallery No. 1, as set forth in preceding circular.
8.—Trauzl Lead-Block Test.