Panama president sees no environmental threat from copper at closed First Quantum mine
Environmentalists as well as mining companies had raised concerns over risks from leaving the copper on site.
Workers at the world’s biggest copper mine in northern Chile downed their tools over the weekend as part of an indefinite strike over unmet contract demands.
About 2,300 workers of the Escondida mine, under majority control of British-Australian giant BHP Billiton, had launched a stoppage over unresolved disputes such as the failure to reach agreement over annual bonuses.