Increasing the ratio of black carbon to sulphate in the atmosphere increases climate warming, suggests a study by University of Iowa professors Greg Carmichael, Karl Kammermeyer Professor of Chemical and Biochemical Engineering and colleagues.
The challenge was launched by Mackay Conservation Group in January.
The statement came a day after cricket legends Ian and Greg Chappell and few other prominent Australians urged Adani Group chairman Gautam Adani to abandon the mine project
The mine got the sign-off from Environment Minister Greg Hunt in October after the company cleared concerns about two rare outback species
'We are writing to respectfully ask you to abandon the Adani Group's proposal in Queensland's Galilee Basin...Pollution from burning coal was the single biggest driver of global warming, threatening life in Australia, India and all over the world'
OSCO E&C said Adani had asked it to halt its design work as of July 16, with tentative plans to resume work in early October.
The project includes a 300 kms rail line connecting Adani's planned Carmichael Coal Mine, Northwest of clermont, to the Abbot Point Coal port, near the Great Barrier Reef.
Reports said that Adani took legal action to override the W&J people.
Adani Enterprises recently also inked a pact to buy out Linc Energy's royalty rights from the Carmichael coal project for AUD155 million.
90 prominent Australians warn Indian energy giant Adani that its controversial coal mine project in Queensland could damage bilateral ties and even affect sporting links.
Approval for Adani's Carmichael coal mine was set aside last week.
The approval was announced by Environment Minister Greg Hunt, who said "after undertaking a thorough assessment and consideration under national environment law, I have approved the Carmichael Coal Mine and Rail Infrastructure project, subject to 36 strict conditions".
Green and Indigenous groups in Australia have criticised the government's decision to grant new approval to Indian mining giant Adani's $16.5 billion controversial coal mine project in central Queensland.
Adani, which estimates its project will generate more than A$22 billion ($15.6 billion) in taxes and royalties, has yet to line up funding but is sticking to a late 2017 start date.
Progress on the mine was blocked in August after a claim Adani failed to take into account the welfare of the yakka skink lizard and ornamental snake.
The Adanis' Australian dreams have been shattered.
An Australian environmental group has launched a legal challenge against Adani Enterprises' $7 billion Carmichael coal mine project in the Galilee Basin.
The Greens are calling for an urgent investigation.
Projects in other developed countries, such as Canada, and even in developing nations like Mozambique and Indonesia are also in limbo