The VES (Vertical Electrical Sounding) method is a geophysical technique utilized for subsurface exploration.
The DTH (Air Precusion) method is employed for drilling water wells, which involves utilizing a hammer positioned at the end of the drill string to break the rock into smaller pieces.
The Mud Rotary method is used for drilling water wells by circulating a drilling fluid, or mud, to aid in creating the borehole.
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