A handful of farming families from Wandoan are fighting Xstrata's proposal to build Australia's biggest coal mine on their land.
John Erbacher has been fighting the mine for five years and says the proceedings are about more than staying on the family farm.
"I've got to be able to look my grand kids in the eye and say I tried to protect the underground water," he said.
The farmers were unsuccessful when they challenged the project in the Land Court last year.
A date for the Supreme Court hearing is yet to be set.