"This is going to be a golden period of 10 years, at least," said Keith Martin, an attorney with Norton Rose Fulbright who works on financing renewable energy projects.
The company's Canadian unit is working with the government to "identify opportunities for industrial facility permitting reforms", the amended filing said.
Francis will install the first cardinal of Brazil's Amazon region this month in a sign of his concern for the rainforest and its indigenous inhabitants.
The mysterious hole of 36.5 meters in diameter that emerged in late July led the mining regulator to suspend operations of a nearby mine owned by Canada's Lundin in the northern district of Candelaria.