Core drilling apparatus that includes a wire line core barrel inner tube assembly movable through a drill stem to be seated in a latched core taking {HEAD ~ position} adjacent {TAIL ~ the drill stem core bit} and an overshot assembly coupled to the inner tube assembly for lowering and withdrawing the inner tube assembly in the drill stem 
Core drilling apparatus that includes a wire line core barrel inner tube assembly movable through a drill stem to be seated in a latched core taking { HEAD ~ position } adjacent { TAIL ~ the drill stem core bit } and an overshot assembly coupled to the inner tube assembly for lowering and withdrawing the inner tube assembly in the drill stem
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH