A sinkhole roughly 8–10 m wide and several metres deep has opened on the AJ Burkitt Reserve sporting oval in Heidelberg, directly adjacent to the North East Link tunnel alignment in Melbourne’s northeast. Victorian Infrastructure Delivery Authority has confirmed the “surface hole” is in the vicinity of active tunnelling operations, leading to a work pause while engineers and emergency crews carry out geotechnical investigations and monitoring. No injuries or structural damage have been reported, but the area remains fully cordoned off pending cause determination and stability assessment.

Assessing dam failure risk with WTW takes centre stage in the latest Engineers Collective podcast, focusing on how insurers and engineers jointly quantify breach probabilities and downstream consequences for large embankment and concrete gravity dams. Discussion covers use of probabilistic risk assessment, portfolio-level screening tools and event trees to evaluate failure modes such as overtopping, internal erosion and spillway degradation under extreme rainfall. The episode also examines how updated risk metrics influence capital maintenance planning, emergency drawdown provisions and prioritisation of dam safety upgrades.

Demolition contractor Reddem Ltd has been fined £4,000, with £4,000 costs and a £1,600 victim surcharge, for operating an illegal asbestos waste site at The Old Gas Works Yard in Wooler, Northumberland, without an environmental permit. Environment Agency and HSE inspections in June 2023 found nine skips with asbestos-containing demolition waste stored in open containers, contrary to requirements for double-bagging and sealed, enclosed skips. More than 40 tonnes of asbestos material were subsequently removed to a permitted facility, signalling continued strict enforcement of asbestos handling and waste permitting rules on demolition projects.