With the pilot hole for Wilmot Pipeline boring project complete the next step is to enlarge the bore hole from 10 inches to 24 inches. The enlarging requires forcing a cutting tool up the path of the pilot hole. The 24 inch cutting tool is rotated as it is forced through the pilot hole by the directional drilling rig pushing from one end and an excavator, 1/2 mile away, pulling on drill pipe from the other end of the pilot hole.
This photo shows the excavator pulling on the drill pipe as it exits the pilot hole 400 feet away.
Video of the excavator pulling on the rotating drill pipe. The sound is created by the rotating drill pipe.
22 March 2012
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