As of last Saturday (3/19), 630 ft of temporary 12″ casing has been installed in the northern conduit as part of the pilot hole. This casing is installed (as seen in the image above) into the pilot hole in order to add stability and to prevent it from collapsing. L3-Maripro workers at the site have drilled 1,482 ft of the 5,000 ft horizontal conduit.