Maine’s resource-rich Great North Woods once hosted the Katahdin Iron Works, a large mill that supplied wood for furnaces and iron ore to be smelted into pig iron. Up to 20 tons of pig iron were produced daily at the mill’s peak production in the 1880s, but more efficient mills closer to cities would lead to its closing before the turn of the 20th century. Today, only the blast furnace and one charcoal kiln remain.
Iron ore from nearby Ore Mountain and the wood from Maine’s vast northern forest facilitated the Katahdin Iron Works. Built in 1843, the mill produced a steady supply of pig iron for use in metal tools, machinery, and railroads. The mill supported a small town of 200 workers and their families, and the area became a tourist attraction thanks to its isolated location. The Silver Lake Hotel become known for its mineral springs.
Unfortunately, the boom era was not to last. The iron ore used was rich in sulfur, which had to be roasted out before smelting. The isolated location meant higher transportation costs to bring the iron to market, even after a railroad was built. The mill caught on fire numerous times. Enormous new mills built in Pennsylvania could produce iron and steel much more efficiently and cheaply. Katahdin Iron Works finally closed in 1890, and the Silver Lake Hotel burned down in 1913.
Today, you can see the ruins of the old blast furnace and a charcoal kiln. The land they are on was donated to the state of Maine in 1968 as preserved as a historical site.