blasthole drilling

blasthole drilling

[′blast‚hōl ‚dril·iŋ]
(engineering)
Drilling to produce a series of holes for placement of blasting charges.
References in periodicals archive ?
Tenders are invited for Hiring of HEMM for diversion of Nallah of varying cross section and 1060 metres length,cutting,removal of OB including blasthole drilling, blasting, Excavation of various rock / soft earth cutting of OB strata (consisting of top soil, alluvium soil, blast rock etc.
Waterwell and blasthole drilling equipment are made in this industry, as is portable drilling equipment.
STOCKHOLM -- Atlas Copco (STO:ATCOA) (STO:ATCOB) has received one of its largest orders ever in South Africa, to deliver Pit Viper 351 blasthole drilling rigs for a value of around MSEK 250 to Kumba Iron Ore, a unit of Anglo American.