Long time no photos says Dick Bellchambers. As of the 22 Feb 2006 riveting has been completed around nearly half of the foundation ring. The photo shows the throat plate. Hanging from the sky-hook is the pneumatic holder-on which is used to hold the preformed head of the rivet during the process to form the other head which are the ones that can be seen here. The holder-on is being supported from the overhead gantry due to its considerable weight.
Credit: Dick Bellchambers, 22 February 2006