The Greens have called for a parliamentary inquiry into the cause of the recent Yallourn brown coal mine shut down.
It comes after the Victorian open cut coal mine flooded due to extremely heavy rain and floods which hit the state earlier this month.
Water first flowed into the mine after the Morwell River overflowed, but its rate increased over night, forcing workers to be evacuated and an exclusion put in place.
Three conveyors were forced to stop operations, however the generator and actual excavation area was not flooded significantly.
The Yallourn coal mine saw a significant collapse a few years ago after its northern wall subsided.
The focus of the Greens inquiry would be on the actual Morwell River diversion, rather than the mine, and the role it played in causing the flooding, according to The Herald Sun.
"We were told that this river diversion was designed for a one in 10,000 year flood event, and yet it ended up in disaster,'' Greens member Greg Barber said.
"This is a risk to the environment, to our energy supply, and in some cases, to workers' safety, and I think the Parliament should get into an inquiry about it.''
Since the incident the mine has slowly worked to come back online, and three of four generators at the operation are expected to be working again by the end of the week.
A permanent repair to the river diversion itself is also being designed to ensure there is not another incident like this.
Image: Channel Nine.