pneumatic drilling

pneumatic drilling

[nu̇′mad·ik ′dril·iŋ]
(mechanical engineering)
Drilling a hole when using air or gas in lieu of conventional drilling fluid as the circulating medium; an adaptation of rotary drilling.
References in periodicals archive ?
Tenders are invited for Spare Part For Pneumatic Drilling Machine Capacity 6 Mm Model No C-25 Spring Part No.
The data base includes - but is not limited to - low altitude magnetic surveys of the entire region, local gravimetric surveys, bedrock surface sampling by pneumatic drilling, geologic mapping, cross sections of previous mining areas, and mine records.
Tenders are invited for Heavy Duty Pneumatic Drilling Cum Reaming Machine As Per Annexure Attached.
Tenders are invited for Pneumatic Drilling Machine 6Mm.
Tenders are invited for Portable Type Pneumatic Drilling Machine - Drilling Capacity 22 Mm, Free Speed 350 Rpm, Spindle Offset 34.