Device for sealing a drill hole and for discharging...

Device having a filter, a filter vibrating means and a...

Diverter apparatus

Diverter including apparatus for breaking up large pieces of for

Door drilling Kelly

Downhole apparatus

Downhole apparatus

Drill cuttings conveying head with wet cuttings diverter

Drill for forming undercuts in bores

Drill hole filling method and apparatus

Drill pipes and casings utilizing multi-conduit tubulars

Drill rod

Drill sampling diversion unit

Drill sampling diversion unit

Drill steel centralizer

Drill string component for drilling with a liquid driven drillin

Drill string valve assembly

Drill tool

Drill tube for use in upward rock drilling

Drilling apparatus