NOT KNOWN FACTUAL STATEMENTS ABOUT GEOLOGICAL SURVEY

drilling might be completed. And in rocky strata as much as 300ft. drilling can be executed. Bore well with a diameter of 4½" and six ½" could also be drilled In the open up well.  It reaches the bell at the top of the opening, after which you can moves via a sample hose which is attached to the top of the cyclone. The drill cuttings The Corpo