Central Queensland is an imprecisely-defined geographical division of Queensland (a state in Australia) that centres on the eastern coast, around the Tropic of Capricorn. Its major regional centre is Rockhampton. The region extends from the Capricorn Coast west to the Central Highlands at Emerald, north to the Mackay Regional Council southern boundary, and south to Gladstone. The region is also known as Capricornia. It is one of Australia's main coal exporting regions. At the 2011 Australian Census the region recorded a total population from the six local government areas of 233,931. Industry Economically, Central Queensland is an important centre of primary sector industries, particularly for food and fibre production. Central Queensland includes the Bowen Basin which is rich in high quality coking coal, the Port of Gladstone produces 40% of the state's export earnings, the Fitzroy River is the second-largest river system in Australia and commands significant water resources such as Fairbairn Dam. Gladstone has a significant aluminium smelter. Beef Rockhampton is claimed to be the beef capital of Australia, a title which is disputed by Casino in New South Wales. Beef production in the region is centered on Brigalow and speargrass land types. There are three abattoirs in the region. Every three years, Rockhampton holds the national Beef Australia exposition to celebrate the cattle industry as well as to facilitate trade opportunities for Australian beef producers. Mining Central Queensland is one of the world's leading producers and exporters of black coal. Ludwig Leichhardt was the first European to discover coal deposits in the region in 1845. In the 2011-2012 financial year the region produced 40% of the state's total coal production. Coal is extracted from the Bowen Basin and transported to port facilities at Port of Gladstone via the Blackwater railway system or to both Hay Point and Abbot Point via the Goonyella railway line. Coal mining is expanding west into the Galilee Basin and requires an extension of the Goonyella line to transport coal to port. Many mines in the region, particularly those within the Fitzroy River basin, were severely impacted by flooding during the 2010–11 Queensland floods. Gold, silver, limestone, coal seam gas, magnesite and gemstones are also mined. Sapphires were discovered here in 1875. Gold was discovered in the Mount Morgan region around 1865. Mount Morgan Mine has since gone on to become one of Australia's richest mines. Purpose-built mining towns in Central Queensland include Dysart,