The sketch shows a simplified interpretation of the likely construction of the gantry road from contemporary newspaper reports, together with the location of the failure of the supporting timber beam. The gantry road was built of timber beams 1 to 2ft (0.3-0.6m) thick in sections 40ft (12.2m) in length, although the last section to have been built, which was the one which collapsed, was only 34ft (10.4m) long. The height of the structure was about 40ft (12.2m) and the width of the road was 70ft (21.3m). the beams were fixed together with iron plates and bolts and were braced with iron girders. The gantry crane fell as the stone was being readied for lowering into a railway wagon, so at this time the crane would have been at the far end of its travel i.e. at its closest to the upright timberwork. [412] [413] image [417]