Can a mining corporation ever truly be a good neighbor?

Good neighbor agreements, or GNAs, aim to hold big firms accountable for their environmental conduct - but can wealthy companies really be tamed?

Twenty years ago, a group of cattle ranchers, sheep herders and community members in rural Montana came together and struck a rare agreement with a mining company: be liable for community-set environmental standards in exchange for unobstructed use of the land.

Related: Trump administration rule seeks to make drilling easier in national forests