A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Rig drills meter per minute
The optimization of the rig's 328 kilowatt (kW) engine power combined the patented COPROD drilling technique for high penetration and accuracy make for an advantageous rig, the company reported.
Rig drills meter per minute
The optimization of the rig's 328 kilowatt (kW) engine power combined the patented COPROD drilling technique for high penetration and accuracy make for an advantageous rig, the company reported.
Rig drills meter per minute
2017
Article (Journal)
English
FIRE FOCUS "Two-Minute Drills"
British Library Online Contents | 2001
Fire Focus "More Two-Minute Drills"
British Library Online Contents | 1998
| Tema Archive | 1970
Online Contents | 1994
Core drills and churn drills for construction of dams
| Engineering Index Backfile | 1957