RTG operates a joint venture with the Special Mining Lease Osikaiyang Landowners Association, a Panguna landowners group. The JV employs 15 people, including Philip Miriori, the chairman of the landowners group.

There are bigger fish too. Fortescue Metals Group Ltd. said in an emailed statement it has sent representatives to Bougainville to learn about the region and potential opportunities, confirming earlier reports. Founder Andrew Forrest is Australia’s second-richest person with a $10.2 billion fortune, according to the Bloomberg Billionaires Index.

Shaw and Partners’ O’Connor said Chinese miners may also have a chance of redeveloping Panguna because they have a greater risk appetite and access to cheap financing.

But the Panguna landowners group Chairman Miriori said the people he represents aren’t interested in working with Chinese developers because of their poor environmental track record.

If anyone wins the right to develop Panguna or other parts of the autonomous region they will need to do so cautiously. Violence remains a constant threat in a community that is still fiercely divided.

A geologist working for Perth-based Kalia Ltd. was killed and seven others were injured in an attack in northern Bougainville in December, according to the local government and the company, whose chairman is former Australia Minister forDefence David Johnston. Authorities subsequently suspended Kalia’s exploration expeditions and geological field work.

There’s also a moratorium on work at Panguna because of sensitivity to restarting the mine, said Raymond Masono, Bougainville’s vice president and minister for mineral and energy resources.

“We are no longer talking with any investors about Panguna until the moratorium is lifted, and we don’t know when” that will be, he said by phone. “The government is treading very carefully on this particular mine.”

Bougainville Copper lost 5% to close at 28.5 Australian cents in Sydney trading on Tuesday.

But prospects for restarting Panguna and allowing for the development of new mines are bolstered by the idea that Bougainville would need revenue to have any chance of financing an independent state. Many hope the mineral wealth could ultimately help reduce poverty for the region’s 300,000 people where estimated per capita GDP is only about $1,100.