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.
Jonesboro, LA Profile: Facts, Map & Data. Jonesboro, Louisiana - Basic Facts. The Town of Jonesboro had a population of 4,719 as of July 1, 2016. The primary coordinate point for Jonesboro is located at latitude 32.2335 and longitude -92.7106 in Jackson Parish. The formal boundaries for the Town of Jonesboro (see map below) encompass a land area of 4.85 sq. miles and a water area of 0.06 sq. miles.