The National Park Service in Yellowstone requires the delivery of 8050 tons of chip sealing chips to the Norris Pit located 21 miles south of Mammoth Hot Springs and one mile east of Norris Junction, ... The National Park Service in Yellowstone requires the delivery of 8050 tons of chip sealing chips to the Norris Pit located 21 miles south of Mammoth Hot Springs and one mile east of Norris Junction, Yellowstone National Park