left and the core population decreased to 16,984 as of 2001. The city has been dissolved/deincorporated since municipal amalgamation in 1995, which formed the Cape Breton Regional Municipality. Economy Glace Bay was once a coal mining town. In 1860, the Glace Bay Mining Company was formed and it operated two mines. The first large colliery, the Hub Shaft, opened in 1861. Large-scale mining commenced in 1893 after exclusive mining rights were granted to the Dominion Coal Company. Glace Bay was incorporated as a town on January 18, 1901. At its high point the company operated eleven mines in all, and was responsible for 40% of Canada's coal production. Coal was transported on the Sydney and Louisburg Railway to both of those ports for shipping. The S & L Railway's main operations, including the roundhouse and machine shops were located in Glace Bay. Glace Bay's extensive coal and rail operations made the town the industrial center of Cape Breton. As coal mining became less important, the mines were closed until, in 1984 Colliery No. 26 was closed by the Cape Breton Development Corporation. Many residents of Glace Bay started to work at the two other coal mines in the area: Prince Colliery in Point Aconi and Phalen Colliery and Lingan Colliery in Lingan. However, coal mining continued its decline with Lingan closing in the mid-1990s, followed by Phalen in 1999 and Prince in 2001. Fishing was also an important industry throughout the 20th century. However, by the 1990s fish stocks were so depleted that the fishery was closed. Some fish processing still occurs here. Present day The former town of Glace Bay has a population of slightly fewer than 20,000 people. In 2001, a call centre operated by Stream Global Services, using post-industrialization subsidies opened. The Swiss mining consortium Xstrata was the primary partner in the Donkin Coal Development Alliance, which won the rights to develop an abandoned mine site in the nearby community of Donkin. Currently, the mine is owned by Kameron Collieries, a subsidiary of Cline Group LLC which purchased the operation in 2014–2015. Coal production commenced in February 2016 and by the fall of 2018, the mine had 120 employees. Historical features and places Marconi National Historic Site The Marconi National Historic Site of Canada is located at Table Head in Glace Bay. Parks Canada maintains an interpretive centre at the site honouring the role of Guglielmo Marconi