FULL-FACE FIRING

Domain	Definition
Mining	With modern drilling equipment, it is now possible, in suitable conditions, to drill small-diameter holes from top to bottom of the face, and where this can be done considerable advantages as to cost and efficiency can be obtained as compared with the bench method. In high faces of 50 ft (15 m) and upward it is not always easy to drill vertical holes to give small burdens because of the breakback of the rock at the crest of the quarry face. It is therefore recommended that larger burdens be taken and that the vertical holes be supplemented by breast holes at quarry floor level. These holes are intended to permit concentrated explosive charges to blow out the toe rock, while the explosive in thevertical holes brings down the rock from the face. (references)
Source: compiled by the editor from various references; see credits.

Anagrams: FULL-FACE FIRING

Scrabble® Enable2K-Verified Anagrams
	Words within the letters "a-c-e-f-f-f-g-i-i-l-l-n-r-u"
	-5 letters: cellaring, fullering, laureling, luciferin, neuralgic, nullifier, recalling, refalling, refilling.
Source: compiled by the editor from various references; see credits. SCRABBLE® is a registered trademark. All intellectual property rights in and to the game are owned in the U.S.A and Canada by Hasbro Inc., and throughout the rest of the world by J.W. Spear & Sons Limited of Maidenhead, Berkshire, England, a subsidiary of Mattel Inc. Mattel and Spear are not affiliated with Hasbro.