135892 ⎘
Other methods or devices for dislodging with or without loading by devices with parts pressed mechanically against the wall of a borehole or a slit
Method and apparatus for removing debris from a drill hole during drilling
#2Enhanced endcap ram accelerator system
#3Hydraulically operated splitting device
#4Method and apparatus for splitting or cleaving rock
#5Method and apparatus for splitting or cleaving rock
#6Borehole impact rock breaker
#7Rock breaker tool