Show BARK BARK HARK BEETLES MENACE GRAND CANYON FORESTS ogden utah oct 16 ravage rutledge district thousand within grand canyon national forest proven bark threaten yellow pine grand canyon against spread insect request national park service forest service field sent bureau entomology examine large red top aides grand canyon highway north park national forest black hills bark beetle immediate taken cut peel bark order destroy larvae insect found inner bark total spent method CO CO 50 BO BO 60 per cent within thus check spread equal amount must spent next spring order prevent further ar wit told ah |