View of a copper mine in Northern Michigan, USA. A shift of miners transported to underground stope via man-cars. Miners board the man car. The car descends down the mine. Travel shots of the haulage tracks running inside the drift. Timber blocks support the ceiling of the drift.
Copper rocks sorted from waste at a stope of a copper mine in Northern Michigan, USA. Miners fill ore car with waste rock from a chute. Waste rock is dumped into the stope for filling the stope. Miner draws sorted ore from a chute into an ore car.
Mine workers load copper ore onto skips from ore car at a copper mine in Northern Michigan, USA. Ore is lifted from mine to the upper levels. View of large hoisting machine at work. Miners arrive at the shaft station on a man car. Miners disembark the man-car.
Mine workers climb a steep slope of a stope at a copper mine in Northern Michigan, USA. Large timber blocks support the ceiling of the stope. Miners around a large mass of copper weighing approximately 8-tons.
United States Army Air Service (USAAS) 1st Pursuit Group in the northern part of Michigan, United States. A fifty gallon drum of fuel is hauled on a sled towards an airplane. The airplane is fueled by a hand pump. USAAS Curtiss P-1 Hawk aircraft with skis for landing on snow. The engines of the P-1 start. A second plane in the background. A long line of P-1 aircraft with ski-type landing gear. A P-1 aircraft taxis and takes off. Other airplanes taking off in the background.
The various types of drills and bits used for drilling into rocks in the United States. A Corliss air compressor that furnishes air power for rock drilling. Men in a mine in northern Michigan as they work with rotator hammers to sink a shaft 1700 feet below the surface. Six workers drill with rotators. A worker drills into the wall and roof of the mine. An auger rotator being used to drill into a soft ore bench.