Keefer Thomas Coltrin 1821- Born At Thorold Ontario Engaged In
the enlargement of the Welland Canal, 1841-1845, and then transferred to
the Ottawa River works, 1845-1849. Made a survey of the St. Lawrence
rapids, 1850; and prepared the report and plans which resulted in the
building of the Victoria bridge at Montreal. Instrumental in securing
the deepening of the St. Lawrence channel and the adoption of the
standard gauge on Canadian railways. Served as Canadian commissioner at
the London exhibitions of 1851 and 1862, and the Paris exhibition of
1878, and also on the International Deep Waterways Commission. Author of
a number of articles and papers on engineering and public questions.