State Library of NSW
[Page 143]
Definitions
No. 6 Detonator enclosed in a copper tube. Closed at one end. About 1 3/4 inches in length & containing about 35 grains of fulminate of mercury. Bursting power = about 20 lbs per sq. inch.
No. 8 Detonator generally painted red and contains about 60 grains of mercury. Bursting power = 120 lbs. per sq. inch.
Friction tube. Copper solid down tube. Two inches long head part painted green. At open end is small paper wad held in place by shellac. In head
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