Queensland Labor MP Jo-Ann Miller has grilled Premier Annastacia Palaszczuk over her government's support for the Adani mine during budget estimates.
Maverick Queensland Labor MP Jo-Ann Miller has again grilled her own government, questioning Premier Annastacia Palaszczuk over the impact of the Adani mega coal mine on the rest of the state's mining industry.
Ms Miller has locked horns with her colleagues multiple times since she was dumped from cabinet in 2015.
She emerged as the toughest questioner during 2016 estimates hearings.
Ms Miller took the government to task over the issue of black lung in coal miners, which eventually saw her head the inquiry into the re-emergence of the disease.
The Bundamba MP and former police minister used the annual budget estimates hearing on Tuesday to put forward industry modelling that suggested eight mining projects could be shelved due to the impact of the Carmichael coal mine in the Galilee Basin.
"What modelling have you done on impacts of Adani on existing coal mines and will you make it publicly available?" she asked the premier.
Ms Palaszczuk insisted mine development would still go ahead alongside the Adani project, pointing to recent developments by companies like QCoal as proof the mine hadn't had an impact.
Ms Miller asked why Adani simply couldn't buy coal from local mines instead of building one themselves, to which the premier replied they wanted to control their whole supply chain.
She then asked Ms Palaszczuk if royalties earned by Adani could be less than expected because its control of the supply chain meant it could sell coal to itself.
Ms Palaszczuk took that question on notice, saying it was "quite technical".
Ms Miller also raised concerns that Adani would automate a lot of its workforce on the project, which Ms Palaszczuk said wouldn't happen.
"I've got a firm commitment from the company that they'll employ as many local people as possible," the premier said.
Opposition Leader Tim Nicholls questioned whether the royalty framework offered to Adani amounted to a loan, which the premier denied, saying every cent would be paid back to taxpayers.
Mr Nicholls also grilled the premier over the issue of ministers using private emails, but she and her director-general Neil Laurie refused to give detailed answers due to an ongoing Crime and Corruption investigation into the issue.
Ms Miller also urged Treasurer Curtis Pitt, who fronted the hearings in the afternoon, to work towards increasing full-time jobs in regional Queensland, saying in her own electorate west of Brisbane getting a full-time job was like "winning the lotto".
Mr Pitt said there had been an overall "casualisation" of the workforce, but the government tried to be a "model employer" in its public service to set an example.
The estimates hearings are due to continue on Wednesday.