Snowy 2.0 concrete lab at Lobs Hole closed amid silica concerns

Australia Broadcast Center

07-07-2025

A concrete testing lab at the multi-billion-dollar Snowy 2.0 pumped hydro project has been closed for nearly two months amid concerns workers were being exposed to silica.
SafeWork NSW said it responded to a request for service at Lobs Hole Test Laboratory on May 15 regarding concerns about respirable crystalline silica (RCS).
The inhalation of fine silica dust can result in the lung disease silicosis, causing long-term lung damage that can be fatal.
SafeWork NSW documents seen by the ABC revealed the health and safety authority believed workers were exposed to "respirable dust and RCS in [a] lab building at Lobs Hole".
In a statement, SafeWork NSW told the ABC the business had "ceased use of the laboratory" while the concerns were being addressed.
"SafeWork NSW enquiries remain open as work continues with the business and the health and safety representatives to ensure adequate control measures are implemented," the statement read.
Snowy Hydro was directed to take measures to mitigate further risks, including cleaning the lab's walls and floors, and putting in additional ventilation systems to extract dust from all rooms in the building.
Concrete testing operations have not been impacted by the lab's closure, as testing has been diverted to another lab.
Snowy Hydro confirmed up to 12 employees worked in the Lobs Hole concrete lab.
In a statement, Snowy Hydro said it expected "the highest standards of safety, focus and leadership" from its principal contractor on the project Future Generation Joint Venture (FGJV).
"We are always clear that the safety and wellbeing of the Snowy 2.0 workforce must always come first," the statement read.
The project is located in the NSW Snowy Mountains.
In March, the NSW government formed an expert taskforce of government, medical, industry and union representatives to address silica-related health risks to tunnelling project workers across the state.
Monash University professor of respiratory pharmacology Jane Bourke said workers in industries like tunnelling, mining and construction, and those working with engineered stone bench tops, could be exposed to silica dust.
"If it [silica dust] is ground to very small-sized particles, it can bypass all the body's normal defence mechanisms that we have when we breathe in things that shouldn't be in our body," she said.
"The body's not able to cough it out or clear it from the lungs. And this eventually causes inflammation and scarring of the lungs."
Professor Bourke said silicosis in the tunnelling industry was "an area of emerging concern", after more than a dozen Sydney tunnel workers were diagnosed with the incurable disease.
"It would be naive to think that the disease is absent in other workplaces where there would be a similar level of risk," she said.
In a statement, contractor Future Generation Joint Venture (FGJV) said it prioritised "the safety and wellbeing of its workforce as a fundamental aspect of the operation".
"FGJV is proactive and works in collaboration with health and safety representatives and SafeWork NSW to ensure the highest standards of wellbeing for those delivering Snowy 2.0," it said.
SafeWork NSW told the ABC it had an "active presence in tunnelling projects".
The Snowy 2.0 project is expected to provide up to 2.2 gigawatts of electricity to the national grid once completed.
The controversial project is expected to start delivering power in late 2027, following a string of setbacks.
Work on the $12 billion project stopped in January when concerns were raised about the status of "last resort" chambers, designed to be used in an emergency when workers were unable to evacuate.
Underground work was also halted again for three weeks in late February, after a ventilation fan imploded on site and sent metal shrapnel flying through the air.