"In April 1943, work commenced to excavate the cutting. A workforce of prisoners of war began the task of hacking back the jungle removing the loose earth and drilling in rock by hand. Little machinery was available. Most of the drilling work was done by the hammer and tap, a process whereby one man would hold and rotate a drill or tap while his mate hit the head of the drill with an eight to ten pound hammer. When the hole was deep ... (more)
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