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Adrien Pouliot, engineer and mathematician (b at Saint-Jean, Île d'Orléans 4 Jan 1896: d at Québec City 1980). After completing his cours classique at the Séminaire de Québec, he entered the École Polytechnique de Montréal earning a BA in applied science in 1915.

Gordon Roy McGregor, engineer, aviator, airline executive (b at Montréal 26 Sept 1901; d there 8 Mar 1971). After attending McGill University, he joined Bell Telephone Co of Canada as an engineer in 1923, where he remained until joining the Royal Canadian Air Force in 1938.

Frederick Walker Baldwin, "Casey," aviator, inventor (b at Toronto 2 Jan 1882; d at Beinn Bhreagh, NS 7 Aug 1948). He completed engineering studies at University of Toronto in 1906. In 1907 he became a founding member

Frederic Franklin Worthington, "Worthy," army officer, engineer, adventurer (b at Peterhead, Scotland 14 Sep 1889; d at Ottawa 8 Dec 1967).

Andrew Onderdonk, contractor (b at New York City c 1849; d at Oscawana, NY 21 June 1905).

Frederic Henry Sexton, educator, mining engineer (b at New Boston, NH 9 June 1879; d at Wolfville, NS 12 Jan 1955). After serving as an assistant in metallurgy at the Massachusetts Institute of Technology 1901-02, he worked for the General Electric Company as a research chemist and metallurgist.

Francis Arthur Sutton, "One-Arm," engineer, inventor, adventurer (b at Hylands, Eng 14 Feb 1884; d at Hong Kong 22 Oct 1944). As a young engineer Sutton built railways in Argentina and in Mexico prior to WWI.

Francis Shanly (Frank), engineer, railway builder (b at Stradbally, Ire 29 Oct 1820; d near Brockville, Ont 13 Sept 1882). Encouraged by H.H. KILLALY, he followed his brother Walter SHANLY into railway building. Both were employed on the Ogdensburg and Lk Champlain Railroad.

Gilbert Clarence Monture (Big Feather), OC, OBE (Order of the British Empire), Mohawk mining engineer, civil servant, army officer (born 27 August 1895 on the Six Nations of the Grand River First Nation, ON; died 19 June 1973 in Ottawa, ON). Monture was a university student during the First World War and interrupted his studies to enlist in the Canadian military. After the war, he completed university and became a world-renowned mining engineer.

Although Alexander Graham Bell is most famously credited as the inventor of the telephone, he also coached what was arguably the world’s most advanced aviation team of the early 20th century.

Gaspard-Joseph Chaussegros de Léry, military engineer (born 3 October 1682 in Toulon, France; died 23 March 1756 in Quebec City, QC). Chaussegros de Léry contributed to the development of New France by fortifying the colony’s towns, namely Quebec and Montreal. His relief maps of Quebec and Montreal are still regarded as accurate models of these cities. Some consider Chaussegros de Léry the father of the first truly Canadian architecture. (See also Architectural History: The French Colonial Regime.)

Eric William Leaver, inventor, electronics engineer (born 11 August 1915 in Langham, England; died 12 February 2004 in London, Ontario).

John (Jack) Archibald Armstrong, OC, business executive, geologist, engineer (born 24 March 1917 in Dauphin, Manitoba; died 26 December 2010 in Nanaimo, BC). Armstrong graduated from the University of Manitoba and worked four decades for Imperial Oil, Canada’s largest oil company. He served as its CEO (1973–81) and chairman (1974–81) before retiring 1982.

Bernard Lamarre, engineer and construction contractor (born 6 August 1931 in Montréal, Qc; died 30 March 2016 in Montréal).

Roland Galarneau, CM, machinist and inventor (born 16 February 1922 in Hull, Quebec; died 22 May 2011 in Hull). In the late 1960s, Galarneau invented the Converto-Braille, a computerized printer capable of transcribing text into Braille at 100 words per minute. This was a landmark innovation for people with visual impairments, as it increased their access to textbooks and other written information. Galarneau developed faster versions of the Converto-Braille in the 1970s. The company he founded eventually adapted the machine into software for IBM computers in the 1980s. This software was a precursor of the Braille software used today.

George Johnn Klein, design engineer (b at Hamilton, Ont 15 Aug 1904; d at Ottawa 4 Nov 1992). Possibly the most productive inventor in Canada in the 20th century, he spanned in his career the "stick and string" era of aviation to the Space Shuttle. Klein worked 1929-69 at the National Research Council and as a consultant after retirement. He designed the NRC's first wind tunnels and undertook research on fitting skis to aircraft, which led in turn to designing the Weasel army snowmobile (mass-produced in the US as the M-29) and ultimately to studying the mechanics of snow, on which he became an authority. Gearing systems were a lifelong specialty.

Martha Eva Salcudean (née Abel), OC, OBC, professor of mechanical engineering (born 26 February 1934 in Cluj, Romania; died 17 July 2019 in British Columbia). Salcudean was a leading authority on computational fluid dynamics and heat transfer. In 1985, she was named chair of the department of mechanical engineering at the University of British Columbia. This made her the first female head of a Canadian university’s engineering department. Salcudean dedicated much of her academic career to forging research and development partnerships. She fostered collaboration between universities, government agencies and industry groups in sectors such as mining, pulp and paper and aeronautics.

Chalmers Jack Mackenzie, engineer, research manager (b at St Stephen, NB 10 July 1888; d at Ottawa 26 Feb 1984). He was the single most important figure in the postwar growth of Canadian science.

Gerald Vincent Bull, engineer and ballistics expert (born 9 March 1928 in North Bay, ON; died 22 March 1990 in Brussels, Belgium). He studied at the University of Toronto’s Institute for Aerospace Studies. At the time, he was the youngest person to ever receive a PhD from the university. He was involved in some of Canada’s most advanced experimental defence projects. Later in his life, Bull was convicted of breaking an international arms embargo against apartheid South Africa. He spent his life perfecting artillery systems; some of his designs could launch payloads into space. He was assassinated during the development of a space gun for Iraq.