I found this article online, it is a bit old but seems relevant.
" Doctoral candidate Ben Heard said waste would be stored in a concrete building. A potential nuclear power plant would generate about 6250 tonnes of spent fuel in its 60 year life. This would generally need to be stored in a 9500m2 area.
Senator Edwards said some countries could be willing to pay up to $1 million a tonne to send used fuel rods to South Australia for storage."
No idea on how much it would cost to build and run the facility but it seems yacheng might have something to stand on. I know nothing about Nuclear storage or if GBG would even win the contract, but the figures appear positive.
GBG Price at posting:
4.0¢ Sentiment: Hold Disclosure: Held