Two sites in rural South Australia have been volunteered as potential locations for a national radioactive waste management facility.
In March, News Corp reported the proposed $257 billion international nuclear waste repositor has received the backing of 42 influential people, including Economic Development Board chairman Raymond Spencer.
In a new open letter to state MPs, the letters asked the South Australian Government to commit to completing first-stage investigations of the proposed high-level repository.
The Federal Government last year asked landowners to express their interest in hosting a radioactive waste management site.
Australia has 4000 cubic metres of low-level waste and 550 cubic metres of medium-level waste in temporary storage that need a permanent home.
The waste is said to be a by-product of nuclear medicine and research, including contaminated gloves and gowns.
Minister for Resources and Northern Australia Matt Canavan told AAP he plans to approve nominations for potential sites at Lyndhurst and Napandee in SA.
In a recent notice in the Government Gazette, Senator Canavan said the sites would undergo detailed assessments to determine their suitability.
The Minister also invited local communities and other interested parties to give feedback on the proposed sites through his office.