None of 42 projects is on track, says the UN, alleging that miners had failed to provide effective reparations since Brazil's worst environmental disaster.
Russia is considering tripling the mineral extraction tax on metals and fertiliser producers to raise revenues, although the Kremlin said no decision had yet been taken.
The miner said it respects the right of shareholders to demand resolutions, but will not consider them at the annual shareholder meeting to be held on Nov. 11.