 He also wrote many essays published in local newspapers.In addition to Grant's conservation work on the Big Hole, he campaigned in the mid-1970s for the cleanup of the Clark Fork River which was heavily polluted by the Anaconda Copper Mining Corporation's mining and smelting activities in the Butte-Anaconda region.This was long before the creation of the Superfund Law and during a time when the Clark Fork River was largely devoid of aquatic life for 120 miles from its headwaters near Butte to its confluence with the Blackfoot River, near Missoula.