单词 | gophering |
释义 | gophering [`gō·fǝ·riŋ] MINING ENGINEERING A method of breaking up a sandy medium-hard overburden where usual blastholes tend to cave in, by firing an explosive charge in each of a series of shallow holes; debris is cleared, and holes are made deeper for further charges, until they are deep enough to take enough explosives to break up the deposit. |
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