SHAFT DRILLING

Domain	Definition
Mining	The drilling of small shafts up to about 5 ft (1.5 m) in diameter with a shot drill. In Virginia, shafts up to 6 ft (1.8 m) in diameter have been sunk by core drilling. A ring 4 in (10 cm) wide is formed by roller bits similar to oilfield rotary drilling. Six tricone cutters are used, and a large core is formed. A central hole is drilled in the core, and a small explosive charge is fired to break it for removal. In some cases, it isremoved bodily by a core catcher. (references)
Source: compiled by the editor from various references; see credits.

Anagrams: SHAFT DRILLING

Scrabble® Enable2K-Verified Anagrams
	Words within the letters "a-d-f-g-h-i-i-l-l-n-r-s-t"
	-3 letters: nightfalls.
	-4 letters: diallings, disrating, draftings, drillings, fanlights, farthings, firsthand, firstling, flatlings, frillings, inthralls, nightfall, ringtails, shrilling, thralling, thrilling, triflings.
	-5 letters: airlifts, airthing, anthills, darlings, dartling, dialings, dialling, diallist, digitals, dilating, distrain, drafting, drifting, drilling, failings, faintish, fairings, faithing, fanlight, farthing, fatlings, fillings, finalist, fishtail, flailing, flashing, flatling, flirting, frilling, gliadins, handlist, hildings, hirsling.
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.