Core drilling apparatus that includes a wire line core barrel inner tube assembly movable through a drill stem to be seated in {HEAD ~ a latched core} taking {TAIL ~ position} adjacent 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 
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Core drilling apparatus that includes a wire line core barrel inner tube assembly movable through a drill stem to be seated in { HEAD ~ a latched core } taking { TAIL ~ position } adjacent 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
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