 Most of the range is public land administered by the federal Bureau of Land Management . There is very little human development in the remote region — cattle grazing and <unk> are the primary human uses — but former mines at the <unk> <unk> produced some of the largest amounts of mercury in North America in the 20th century . Public lands in the mountains are open to recreation but are rarely visited . <unk> includes large <unk> of big sagebrush in addition to desert grasses and cottonwood and alder stands . Sage grouse and mountain <unk> are two bird species native to the range , and common mammals include <unk> and jackrabbits . 
