<Tr> <Th_colspan="2"> Owner </Th> </Tr> <Tr> <Th> Company </Th> <Td> Adani Group </Td> </Tr> <P> The Carmichael coal mine is a proposed thermal coal mine in the north of the Galilee Basin in Central Queensland, Australia . Mining is planned to be conducted by both open - cut and underground methods . The mine is proposed by Adani Mining, a wholly owned subsidiary of India's Adani Group . The development represents a $16.5 billion investment . </P> <P> At peak capacity the mine would produce 60 million tonnes of coal a year, much of it "low quality, high ash". In court, Adani said it expects the mine to produce 2.3 billion tonnes over 60 years . It would be the largest coal mine in Australia and one of the largest in the world . The mine would be the first of a number of large mines proposed for the Galilee Basin and would facilitate their development . </P>

What is the biggest coal mine in australia