A man in his twenties was hospitalised after a trench wall collapsed on him at the NorthConnex construction in West Pennant Hills. Emergency crews were called to the site where they discovered an injured male worker.
The man had been trapped in the collapsed trench but workers managed to extricate the man before emergency crews arrived.
The man suffered back pain and was taken to Westmead Hospital for treatment.
The collapse occurred approximately 2 kilometres into the NorthConnex tunnel.
SafeWork NSW inspectors visited the site where an investigation was launched. The cause of the collapse has not yet been discovered.