was successful in trials, but not repaired after an engine crankcase explosion a year later. A total of 1,464 locomotives were built at Scotswood Works before it was converted back to armaments manufacture in 1937. Overseas operations After the end of WWI demand for armaments and naval ships all but evaporated, and Armstrong Whitworth had to look into diversifying its business. The company built a hydroelectric station at Nymboida, New South Wales, near Grafton, Australia in 1923–1924. This is still in use and is substantially original. In 1925 the company tendered unsuccessfully to construct the South Brisbane-Richmond Gap (on the New-South Wales-Queensland border) section of the last stage of the standard gauge railway linking Sydney and Brisbane. This was a heavily engineered railway which includes a long tunnel under the Richmond Range forming the state border and a spiral just south of the border. AW's tender price was £1,333,940 compared with Queensland Railway's tender price of £1,130,142. In the mid-1920s the company clearly was trying to break into the booming Australian market, but was stymied by a preference for local companies. Dominion of Newfoundland, an island country then mostly dependent on fishery, had plenty of pulpwood but only one paper mill at Grand Falls-Windsor and one pulp mill at Bishop's Falls, both built in the 1900s. Reid Newfoundland Company owners managed to convince AW to invest in building a second paper mill with a hydro station within 50 kms from it, and a joint venture of Newfoundland Power and Paper Company Ltd. was founded in 1923. After much fighting between Harry Reid and then-PM of the dominion Richard Squires the so-called Humber project (after the Humber River) received support from the local government and loan guarantees both from it and the UK; Squires even campaigned on it, making "Hum on the Humber" his slogan for the 1923 Newfoundland general election. The company can be credited with helping to create the town of Deer Lake. Between 1922 and 1925, a hydroelectric station was built there. The canal system used by the hydroelectric station helped to expand the forestry operations in the area. Some of the equipment used in the construction of the Panama Canal was shipped to Newfoundland island. Electricity from the project was used to power a new pulp and paper mill in Corner Brook which started its work in 1925. Overall, AW spent about £5M (equivalent to £ million