The final size of the drilled hole is 50% larger than the pipe diameter to drain drilling fluids and to accommodate the bend radius of the pipe. Directional drilling machines come in a range of sizes, ...

Wait goes on for Indian tunnel workers trapped for 14 days as drilling machine ‘irreparable’ - Officials work towards ...

The machine will help drill a passage so that a pipe can be inserted through which the workers can crawl out. They have been stuck inside since Sunday, after a landslide caused a portion of the ...