1
Five hundred pounds buoyant blasting gelatine mines require 450 feet spacing.
2
Six hundred pounds ground blasting gelatine mines require 230 feet spacing.
3
In Europe gun-cotton is generally used for both fixed mines and movable torpedoes; Russia, Austria, and Italy use blasting gelatine also.
4
Neither blasting gelatine, dynamite nor gun-cotton fulfills all these conditions; but they satisfy many of them and are more powerful than other substances.
5
"Why, that's blasting gelatine," Jack declared.