A blast furnace is a type of metallurgical furnace used for smelting to produce industrial metals, generally iron, but also others such as lead or copper.
Jackson, Alabama. Jackson is a city in Clarke County, Alabama, United States. The population was 5,228 at the 2010 census. It was one of three wet settlements in an otherwise-dry county.
For example, Jackson county, Mo is the core county of the Kansas City metropolitan area and would seem to be obviously an urban county. But according to the 2000 census there were over 26,000 persons (4%) in Jackson county who were living in census blocks classified as rural.