North Queensland teenagers Brooklyn O'Hearn and Claire Galvin have launched a second bid to stop Bravus, previously known as Adani, from proceeding with its Carmichael coal mine project in the Galilee Basin.
Ms O'Hearn, 17, and Ms Galvin, 19, have written a letter, through lawyers at Environmental Justice Australia, to the State Bank of India (SBI), urging the bank to deny Bravus' request for a $1 billion loan to help finance the project.
Their four-page letter outlines their reasons for denying the loan request, including environmental damage that "the proposed project will cause to the Great Barrier Reef, as demonstrated by the expert evidence currently before the Environment Minister".
Ms O'Hearn, who recently graduated from high school in Townsville, said she was desperate to save the community she'd grown up in.
"Funding the mine is equal to funding the destruction of the environment of both Australia and India, " Ms O'Hearn said.
"They're not considering how their decisions are going to impact our futures.
"The reality of the matter is there's going to be massive detriment in the future to so many of the experiences of the youth that are to come."
SBI is one of the largest lenders in India.
If it pulled out of the project, it would join more than 80 companies which had ruled out working with Bravus, according to environmental campaign group Market Forces.
The ABC has contacted SBI for comment.
Teen action escalating
The teenagers are unfazed by the apparent David and Goliath battle against the mining giant.
In October, they wrote to Federal Environment Minister Susan Ley calling for a revocation of the environmental approvals given to Adani's venture.
Ms Ley's office has not responded to the ABC's requests for comment.
A spokesperson for Bravus said:
"We recognise that people have differing opinions on mining thermal coal and the Carmichael Project, however it is important that they have the facts.
"The Carmichael Project has undergone eight years of assessment, review and legal challenges.
"We have our own plans in place to manage carbon emissions efficiently onsite, from minimising truck haulage routes, to using solar power at our camp site to power radio communications and dust and water sampling activities."
Earlier this week, Bravus was fined $26,000 for "misinterpreting" environmental approval conditions at its central Queensland mine.
The Federal Environment Department issued the company with two infringement notices in October for clearing land without surveying the area within an appropriate timeframe.
