blasting powder

noun
a form of gunpowder made with sodium nitrate instead of saltpeter, used chiefly for blasting rock, ore, etc.

Origin:
1865–70

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Example sentences
For example, the formula for blasting powder has traditionally differed from that for propellant use.
All the while the miners toiled thousands of feet below ground in tunnels dug with blasting powder, picks, and shovels.
Blasting powder and picks were used to widen and/or fill various sections of the crevice.
Nitroglycerin was limited and blasting powder was used for large rock cuts.
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