It wasn't copper that first brought the Europeans to the Porcupine Mountains in the 1700's, but the fur trade. The first copper mining effort in the Porkies wasn't until 1845. The first efforts didn't prove to be very profitable, and in 1864 the mine was sold to a Detroit businessman.
Four more shafts were sunk, one up to 400 feet deep, and a steam powered stamping mill used for crushing ore was brought in. Most of the shafts are caved in and not visible, but the trail was beautiful and for a short mile it packed a lot of punch.