Bill Kotru has seen many mines give way during the 43 years he has been digging for opal in Lightning Ridge, but he now fears another collapse will soon take a local road with it. Authorities have ...

Mr Stutley and Mr Saunders are mining a patch of land 15 miles north of the South Australian town of Coober Pedy, which is known as "the opal capital of the world". South Australia supplies 80% of ...