31:05
Introduction to drill core and core logging
7:18
Geologist Job on RC Drill Rig
3:30
Rock Quality Designation Index (RQD) | Procedure, Classification, Example #education #engineering
4:16
Structure Measurement for Geologists
15:15
How to Drill Holes in Rocks
34:33
An introduction to drilling and sampling in geotechnical practice -- 2nd Edition
6:55
How Diamond Drill Rigs Work
28:20