Borehole 10X excavation gallery II Dan Blankenship – Oak Island 1976 Dan Blankenship inspecting drill casing – Oak Island 1976 Dan Blankenship – Oak Island 1976 Dan Blankenship cutting gates, photo taken by D’Arcy O’Connor when – Crandalls Point, Dec 8 1969 Oak Island Excavations – 1977 Oak Island excavation machinery and equipment – 1976
