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Figure 86. Dynamite Manufacture. (Courtesy Hercules Powder Company.) Hoppers underneath the mixing machine, showing the buggies which carry the mixed dynamite to the packing machines.

Strength

Nitroglycerin 15 20 25 30 35 40 45 50 55 60

Combustible material 20 19 18 17 16 15 14 14 15 16

Sodium nitrate 64 60 56 52 48 44 40 35 29 23

Calcium or magnesium carbonate... 1111111111

Figure 86. Dynamite Manufacture. (Courtesy Hercules Powder Company.) Hoppers underneath the mixing machine, showing the buggies which carry the mixed dynamite to the packing machines.

Strength

Nitroglycerin 15 20 25 30 35 40 45 50 55 60

Combustible material 20 19 18 17 16 15 14 14 15 16

Sodium nitrate 64 60 56 52 48 44 40 35 29 23

Calcium or magnesium carbonate... 1111111111

Mines and reported as a matter of interest, do not differ greatly from those of the 1. f. dynamites by which they have been superseded in common use. The combustible material stated to be used in these compositions consists of a mixture of wood pulp,

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