He obtained a relative result of--
No. 1 dynamite 1.0
Dry gun-cotton 1.37
Nitro-glycerine 2.51
Explosive gelatine 2.57
Forcite gelatine 2.7
Warm nitro-glycerine 2.7
Gunpowder 0.1
The powder gave great trouble in this case, also, by blowing out.
M. Chalon, a French engineer, obtained some years ago, with a small
mortar, firing a projectile of thirty kilos and using a charge of ten
grammes of each explosives, the following ranges:
Meters.
Blasting powder 2.6
No. 1 dynamite 31.4
Forcite of 75 per cent. N.G. 43.6
Blasting gelatine 45.0
Roux and Sarran obtained by experiments in bursting small bomb shells
the following comparative strengths of ranges:
Powder 1.0
Gun-cotton 6.5
Nitro-glycerine 10.0
In actual blasting work the results vary altogether with the nature of
the material encountered, and with the result that is desired to be
accomplished, viz., throwing out, shattering, or mere displacement.
Chalon gives for quarrying:
Powder 1
Dynamite No.
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