Sault Ste. Marie, Ontario the locks. An anti-aircraft training facility was established north of Sault Ste. Marie on the shores of Lake Superior. Barrage balloons were installed, and early warning radar bases were established at five locations in northern Ontario (Kapuskasing, Cochrane, Hearst, Armstrong (Thunder Bay District), and Nakina) to watch for incoming aircraft. Military personnel were established to guard sensitive parts of the transportation infrastructure. A little over one year later, in January 1943, most of these facilities and defences were deemed excessive and removed, save a reduced military base at Sault Ste. Marie. The first "Algerine"-class minesweeper in the Royal Canadian Navy
Sault Ste. Marie, Ontario Canada and the United States. Algoma Steel and the Chromium Mining and Smelting Corporation were key producers for transportation and military machines. The Huron Central Railway has been important to the operation of the steel operation, but Genesee and Wyoming, Inc., owner of the railway, has announced its intention to discontinue operations. It continued to operate under an agreement which terminated on August 15, 2010. Sault Ste. Marie prospered during the 1960s and '70s, but as imported steel began to compete with domestic production, the local industry began to contract. Since the late 1980s, Algoma has declared bankruptcy twice and