tamping

tamp=ing

CIDE DICTIONARY

tamping, n.

The act of one who tamps; specifically, the act of filling up a hole in a rock, or the branch of a mine, for the purpose of blasting the rock or exploding the mine. [1913 Webster]
The material used in tamping. See Tamp, v. t., 1. [1913 Webster]

Tamping iron, an iron rod for beating down the earthy substance in tamping for blasting.

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