"Mr Boyle said the contract price for uranium was $63.31 in 2015 ($US47) a pound, which was problematic for Australian producers.
"Most Australian producers are in the second half of this cost curve," he said.
"Olympic Dam [in South Australia] is the lowest cost producer in Australia and I believe their strategy is to go for scale so they can sell larger volumes of uranium.
"Four Mile [in South Australia] is not too bad, it started mining recently and is recovering the higher grade from their western deposit.""
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