BILLINGS, Mont. (AP) — A new Environmental Protection Agency rule requires upgrades at some Montana power plants and factories in an effort to reduce the haze over two dozen national parks, wilderness areas and wilderness refuges. Here are the 24 places where the EPA has determined visibility is, or may be, affected by those emissions:

— Anaconda-Pintler Wilderness Area, Mont.

— Badlands Wilderness Area, S.D.

— Bob Marshall Wilderness Area, Mont.

— Bridger Wilderness Area, Wyo.

— Cabinet Mountains Wilderness Area, Mont.

— Craters of the Moon Wilderness Area, Idaho

— Fitzpatrick Wilderness Area, Wyo.

— Gates of the Mountains Wilderness Area, Mont.

— Glacier National Park, Mont.

— Grand Teton National Park, Wyo.

— Hells Canyon Wilderness Area, Idaho, Ore.

— Lostwood National Wildlife Reserve, N.D.

— Medicine Lake Wilderness Area, Mont.

— Mission Mountain Wilderness Area, Mont.

— North Absaroka Wilderness Area, Wyo.

— Red Rock Lakes Wilderness Area, Mont.

— Scapegoat Wilderness Area, Mont.

— Selway-Bitterroot Wilderness Area, Mont.

— Teton Wilderness Area, Wyo.

— Theodore Roosevelt National Park, N.D.

— U.L. Bend Wilderness Area, Mont.

— Washakie Wilderness Area, Wyo.

— Wind Cave National Park, S.D.

— Yellowstone National Park, Idaho, Mont., Wyo.