The Plummer Mine Location included specialized buildings that supported deep-shaft iron mining. Steam power created at the Boiler House turned the hoisting engine, and in the early 1920’s electricity from the Electric Transformer House replaced steam power. Overhead cables ran from the Engine House to large sheave wheels at the top of the Plummer Headframe, where they connected to elevator-like cars that raised and lowered miners and ore from the mine. Because the Plummer Mine was 2,367 feet deep, extensive cable was required. Ore cars hoisted from the mine stopped at the tipple halfway up the headframe, where ore could be dumped directly into railroad cars below for delivery to oreboats at Ashland, or loaded into smaller ore carts, pushed down the Plummer’s 36 foot wooden trestle, and dumped into the ore stockpile for later shipment. Equipment could be repaired on site in the blacksmith, carpenter, or machine shops, oil and coke were stored in separate buildings for safety, and the Dryhouse gave miners a place to remove dirty work clothes, bathe, and change into clean dry clothes after long underground shifts.