Ref: 123442/2006-10-14
Other Database Pages Exist for this Phrase:
Drilling (Drilling -is described as the use of such a ...)
Glossary
Percussion drilling
Percussion drilling is described as a drilling method where the rock is broken by a rotary bit into chips that are blown up the hole to be sampled.
Other Database Pages Exist for this Phrase:
Drilling (Drilling -is described as the use of such a ...)
Other Database Pages Exist for this Phrase:
Drilling (Drilling -is described as the use of such a ...)