[1] The White Knob Copper Co., Ltd., of Mackay, Idaho, built a 7.1 miles (11.4 km) long single track railroad for the purpose of hauling ore in 1903.

[2] The entire line was on a grade of about 6 per cent and the roadbed was laid with 60 lb/yard (30 kg/m) T-rails on rough cedar ties, 2 feet (61 cm) between centers.

The regular scheduled speed of cars was 12 miles per hour (19 km/h), and the trains were operated by a dispatcher.

The snow on the tracks of this road was 10 feet (3.0 m) deep in some places in the winter of 1903/04, but the company was able to operate it every day.

The railroad wound up through the hills and the feeders cut across ridges at times and in other places followed the track in order to give lapping points at a distance of every 500 feet (150 m).

The power plant operated both the smelter and the railroad so that individual data are difficult to obtain.

There was a car-house and a repair shop owned by the company, located at the smelter terminal of the road.

Two repair men were constantly employed at this shop, and it was equipped with a lathe, shaper, drill press, bolt machine, pipe machine, emery grinder and also a complete outfit for rewinding the motors of the locomotives and a blacksmith shop.