You might want to look at Thor and Enviro Copper, they are doing some work on ISR which if successful will make the environmental impact even less. I believe a few universities and CSIRO are involved, something about using a degradable liquid instead what is currently used. I'll do some more research before deciding but so far with good uranium prices all I need to see is a plan and will invest.
Bennet Well - Defined Low Cost ISR Western Australian Uranium Resource, page-81
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