Northumberland role in the Industrial Revolution from the 18th century on. Many coal mines operated in Northumberland until the widespread closures in the 1970s and 1980s. Collieries operated at Ashington, Bedlington, Blyth, Choppington, Netherton, Ellington and Pegswood. The region's coalfields fuelled industrial expansion in other areas of Britain, and the need to transport the coal from the collieries to the Tyne led to the development of the first railways. Shipbuilding and armaments manufacture were other important industries before the deindustrialisation of the 1980s. Northumberland remains largely rural, and is the least-densely populated county in England. In recent years the county has
Hinsdale County, Colorado Hinsdale County, Colorado Hinsdale County is one of the 64 counties of the U.S. state of Colorado. As of the 2010 census, the population was 843, making it the third-least populous county in Colorado. With a population density of only , it is also the least-densely populated county in Colorado. The county seat and only incorporated municipality in the county is Lake City. The county is named for George A. Hinsdale, a prominent pioneer and former Lieut. Governor of Colorado. According to the U.S. Census Bureau, the county has a total area of , of which is land and (0.5%)