Of the four shafts on the Dixon's sett, only one could be located at surface. It was decided that if the level inboard of the shaft could be found, then the location and condition of the three remaining shafts would be known. It
A descent of the shaft was made by Mike Sloane and Dave Briggs to the shaft station whilst a second crew went up the adit level. The object was to establish an audible connection before clearing the shaft bottom.