New evidence allowed...
I think it is about the tunnel collapse incident.
A report here had described the incident well...
'2005 a section of the roof of the Lane Cove Tunnel collapsed, an unravelling failure ensued and the collapse propagated through a height of 17m to the surface forming a sinkhole that undermined the front section of Kerslake Apartments (Figure 1). The collapse occurred during the final excavation stages of the intersection of a ventilation tunnel and the exit ramp to the Pacific Highway'
All you need to know about the incident.
Lane Cove Tunnel Collapse And Sinkhole A Forensic Review-1: The Collapse
PDF | Sinkholes do form as a result of natural processes, such as dissolution in carbonate rock formations, and can also occur as a consequence of... | Find, read and cite all the research you need on ResearchGate
cover tunnel photo by: Matt Brown from London, England / CC BY
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https://www.lawyerly.com.au/new-evidence-allowed-in-300m-lawsuit-over-defective-lane-cove-tunnel-construction/