Diamond drill

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(Engin.) a rod or tube the end of which is set with black diamonds; - used for perforating hard substances, esp. for boring in rock.
See under Diamond.

See also: Diamond, Drill

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
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References in periodicals archive ?
The program continues to produce new mineral discoveries on surface on a weekly basis and, two diamond drill rigs are still turning on both the Burgundy Ridge Copper-Gold-Silver System and the Newmont Lake Gold Corridor Trend.
Hawkstone, the 100% owner of the Big Sandy project, has released results from the final holes of its 37-hole phase 2 diamond drill programme on Wednesday last week.
This release provides new data on fourteen diamond drill holes and twenty-eight reverse circulation (RC) drill holes completed since the last report.
The Phase II program will include 49 holes using two reverse circulation rigs and one diamond drill rig.
According to the company, the Volterra Borehole EM will be performed upon the completion of the first drill hole to direct and guide diamond drill targeting.
The construction of diamond drill bits can be broke up into two types (Fig.
Perth, Australia, Jan 29, 2014 - (ABN Newswire) - Dacian Gold Limited (ASX:DCN) report that the exploration work completed in the December Quarter within Dacian's 100% owned Mt Morgans Project included the drilling of four diamond drill holes for 2,257m at the Westralia prospect and 14 diamond drill holes for 5,093m of drilling at the Jupiter prospect.
Professional Diamond Drilling Equipment manufactures diamond drill bits and has a direct sales organisation for exploration drilling equipment.
(based in Vancouver, B.C.) on July 3 released the updated results of its diamond drill program on the El Dorado gold project in El Salvador.
Two shallow geotechnical diamond drill holes for 220.8 metres were drilled at Boyd's Dam (FEDD026, FEDD027) to quantify the physical characteristics of the overburden and oxidised basement for future mining studies.