boulder buster

boulder buster

[′bōl·dər ‚bəs·tər]
(engineering)
A heavy, pyramidal- or conical-point steel tool which may be attached to the bottom end of a string of drill rods and used to break, by impact, a boulder encountered in a borehole. Also known as boulder cracker.
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Samples were collected at surface or near surface after small blasting using the Boulder Buster technique (average sampling depth of 30cm).
Today, Denel, the South African arms manufacturer is reaping the rewards of peace with the Boulder Buster device currently being exported to many countries.
The device, trademarked under the name Boulder Buster, safely breaks rocks where conventional jackhammers would he useless and large explosive charges could he dangerous.

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