Govt okays expansion of Beverley uranium mine in SA

Output will remain within the already approved 1,500 tonnes of uranium oxide per year.

"A comprehensive, scientifically-robust and transparent process has been undertaken in the assessment of the potential environmental impacts of this mine expansion and I have given these matters thorough consideration before making my decision," Garrett said in a statement on Thursday.

Mine owners Heathgate Resources will be forced to maintain a watch on the environment around the mine.

"In making my assessment, I have been particularly concerned that the mine does not adversely affect groundwater values," Garrett said.

"The current comprehensive monitoring program will continue and Heathgate Resources will need to clearly demonstrate that they are having no impact on water quality within the Great Artesian Basin or on aquifers outside the mining lease."