In an effort to receive more financial benefits from mining operations, the government's proposal will also require investors in the sector to get legislative approval before operating.
Together with reevaluating its previous multi-year guidance, the company is now reviewing the financial impact of the mine suspension to its longer term capital and exploration programs.
The monument, one of the 27 President Trump is taking a second look at, covers 1.3 million acres (about 5,260 square km), and it includes land considered sacred to Native Americans.