Well sinking

the art or process of sinking or digging wells.

See also: Well

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
Well sinking consisted of five stages: (1) digging through the soil horizon, (2) breaking through the highly weathered zone, (3) blasting through the consolidated rock, (4) constructing the well curb and pump platform, and (5) placing the pump.