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.