Method and apparatus for laying pipes in the ground
Method for constructing a tunnel or underpass
Method for lowering ground water
Method for placement of production casing under obstacle
Method for settling anchoring device in the ground
Method for the production of piles cast in the ground and hollow
Method of forcibly introducing a curved steel pipe into the grou
Method of laying pipes in the ground
Mobile marine drilling unit
Offshore platforms
One-piece drill bit with improved gage design
Optional up-blow, down-blow jar tool
Overburden drilling apparatus having a down-the-hole hammer...
Pile handing methods
Pile with a foot
Pipe delivery system
Pipe handling apparatus
Pipe handling device
Pipe racking system
Positive release means for articulated flexible shaft