 In 1904 the Ferrona blast furnaces were closed and the last steel poured.By the end of the decade, the last railway boom in Canada was underway with the simultaneous transcontinental railway expansions of the Canadian Northern Railway, Grand Trunk Pacific Railway and the National Transcontinental Railway.SCOTIA made significant investments in its properties over a 3-year period, beginning with the Trenton steel mill which saw 2 rolling mills added to the plant in 1910.