A blast furnace is a special type of furnace. They are used to make iron from ore. Blast furnaces are very large. They can be up to 60 metres (200 ft) tall and 15 metres (49 ft) in diameter.
Jonesborough, Tennessee. Jonesborough (historically also Jonesboro) is a town in, and the county seat of, Washington County, Tennessee, in the southeastern United States. The population was 5,975 at the 2010 census. It is Tennessee's oldest town.
Lawrenceburg is a city in Lawrence County, Tennessee, United States. The population was 10,796 at the 2000 census. It is the county seat of Lawrence County. Lawrenceburg is southwest of Nashville and named after James Lawrence. The city hosts the annual Southeast Law Enforcement Training Seminar, drawing nearly 1,000 police officers to the community each June.