Abstract: An inner tube plug for plugging a diamond drill hole. The plug assembly comprises a compressible plunger component attached to one end of a body component, plug feet radially disposed around the body component, and a torsion spring disposed between pairs of adjacent plug feet. The inner tube plug is used to perform down-hole orientation correction of a drill bole, zone bypassing, and completion of a drill hole.

Abstract: An inner lube plug for plugging a diamond drill hole, the plug assembly comprising a body component having proximal and distal ends; a compressible plunger component attached to the distal end of the body component by attachment means; a plurality of plug feet disposed radially around the body component; and a torsion spring disposed between each pair of adjacent plug feet, as well as methods for using the inner tube plug to perform down-hole orientation correction of a drill hole, bypassing (if an impassable zone, and completion of a drill hole.