OTSI is conducting this investigation in collaboration with the ATSB.
What happened
On Friday 21 March 2025 a Berrima bound Pacific National limestone train 2222 departed Marulan South quarry for Medway Junction, on the Medway quarry branch line. After the passage of 2222, a Maldon bound Pacific National aggregate train 2296 departed the nearby Peppertree quarry on the same branch line, also for Medway Junction. 2222 was stationary at Medway Junction awaiting departure onto the main line when 2296 collided with the rear of 2222.
The lead locomotive of 2296 sustained minor damage with the front 3 hoppers completely derailing and sustaining significant damage. The rear hopper on train 2222 sustained minor damage and avoided derailment. The crew aboard 2296 had minor injuries with one member being transported to nearby Goulburn Base Hospital. The crew aboard 2222 were not injured.