Back-off shooting

Jump to navigationJump to search Signup for GameFly today to get the latest PS4, Xbox and Nintendo Switch games!

The firing of small explosive charges for releasing stuck drilling tools in a borehole. The shock of detonation causes the joint to expand and unscrew slightly. All rods above the joint can then be removed from the hole. Nelson

Source: Dictionary of Mining, Mineral, and Related Terms

Sponsor: V1P 3rd Gen