Mine Hill and its minerals have been associated with Roxbury since the middle of the 18th century. A silver mine was opened here and was later found to contain spathic iron, specially adapted to steel making and a small smelting furnace was built. The abundance of granite found in many of Mine Hill's quarries provided the building material for the ore roaster and blast furnace, as well as for such World wonders as the Brooklyn Bridge and Grand Central Terminal in New York City. Roxbury is a town in Litchfield County, Connecticut, United States. The population was 2,136 at the 2000 census.