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Soil mechanics

Doug VanDine Snippet A

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Doug VanDine answers the question “What are you doing to keep out of trouble these days”? He describes his transition from being a geotechnical design engineer to a researcher and writer of geotechnical engineering history. His first publication gave a history of the Drynoch Landslide in BC, which has been moving for over 6,000 years.  He has also researched and published biographiesy of Robert Leggett, “ a father of geotechnical engineering in Canada” and Major Leslie Charles, who located much of the Hudson Bay Railway from The Pas to Churchill Manitoba a century ago.

Boro Lukajic Snippet A

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Boro Lukajic describes developing his fascination with the Canadian Arctic while a university student in what was then Yugoslavia. He described this to a Canadian immigration agent at the Canadian embassy in Vienna, who responded “Welcome to Canada”.  He describes some of his experiences in the wilderness, including a work camp at Churchill Falls, Labrador – and encounters with a black bear.

Boro Lukajic Full Interview

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Geotechnical engineer Boro Lukajic immigrated to Canada after completing an engineering degree in what was then Yugoslavia.  He became fascinated about the Canadian Arctic – impressing a Canadian Immigration agent at the Canadian Embassy in Vienna by sharing this fascination – and so was delighted to spend his first assignment in Labrador working on the Churchill Falls hydroelectric power development. He recalls his mentors, including an engineer he met while doing his military service in Yugoslavia who ignited his interest in engineering, and Dr. Ray Benson at Acres Engineering who improved his abilities in hydropower engineering.  Mr. Lukajic worked as a consultant in the Canadian Arctic (Yukon, Northwest Territories, Northern Ontario), Latin America, Hong Kong, and the United Arab Emirates.  He describes a six-week visit to Colombia where the had to climb mountains in a jungle invested with snakes and scorpions! His biggest professional transition came in 1977 when he left Acres to join Ontario Hydro and experience project management. At Ontario Hydro, he switched to nuclear engineering, designing cooling water tunnels under Lakes Huron and Ontario. He reflects on changes to the profession, particularly the development of automated tunneling technologies like tunnel-boring machines and smart drill jumbos.

Denise Leahy Full Interview

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Geotechnical engineer Dr. Denise Leahy describes her post-secondary education at Laval and the Institute for Geotechnique in Trondheim, Norway. Her first engineering job was as a technician at the La Grande hydro-electric dam at Baie James, where, sue to security issues, women could not work outside the laboratory. After completing her PhD, she took a job at Geocon, an affiliate of Lavalin, where she was mentored by Lech Brzezinski, Getahun Haile, Heri Major, Benoît Demers and Les MacPhie. Much of her work involved the inspection, maintenance and restoration of mine tailings dams and she describes initiatives to consider acid mine drainage prevention and seismic loading for these structures. She describes initiatives to improve the quality of geotechnical engineering in Quebec, and her interactions with the Canadian Geotechnical Society and the Canadian Dam Association. She recalls the transition to computer-aided engineering, particularly the switch from manual drafting to AutoCad. She offers advice to high school students considering an engineering career and newly graduated Engineers-in-Training.

Kwan Yee Lo Full Interview

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Geotechnical engineer Kwan Yee Lo decided upon graduation in 1957 to do graduate research in soil mechanics at Imperial College London. His Masters of Science work was supervised by Professor Skempton, with Dr. Robert Gibson and visiting Professor Davis from the University of Sydney contributing significantly. In October 1959, he started at the Norwegian Geotechnical Institute, where he essentially was an assistant to Dr. Bjerrum there. He was encouraged by Cam Kenny, later Chair of the University of Toronto Civil Engineering Department, to emigrate to Canada, where he started working for Acres in 1961. His work there included design of the inlet and outlet structures of the Winnipeg Floodway. He then moved to the Ontario Department of Highways, where he tested a full-scale embankment to failure. He joined the University of Laval in 1965 and subsequently, in 1970, Western, where he worked in the areas of tunnels in soil and rock. His many projects included investigating distress at the Thorold Tunnel below the Welland Canal, which led to major changes in the approach to tunnel design in rock. He designed the intake and discharge tunnels at the Darlington Nuclear Plant – the in-situ stresses and time-dependent deformations predictions for the construction of the intake tunnel were sufficiently accurate that it was deemed unnecessary to drill boreholes in the lake or install extensive instrumentation for the discharge tunnel, realizing significant cost savings. He also worked on the Niagara Tunnel from Niagara Falls to Queenston and the Billy Bishop Airport Tunnel in Toronto. He and his graduate students developed means to strengthen clays using electrokinetic forces. He also contributed significantly to the Ontario Hydro (now Ontario Power Generation) Dam Safety Program, developing innovative methods to quantify the safety of 151 dams constructed before the Second World War.

Peter Lighthall Full Interview

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Geotechnical engineer Peter Lighthall is a third-generation civil engineer who studied at the University of British Columbia, graduating in 1971. His first job, for BC mining firm Placer Development, involved construction of a tailings dam to impound mine waste for a new mining operation. Earle Klohn, principal of the firm Klohn and Leonoff, was the principal designer. Two and a half years later, Lighthall was hired by Klohn and Leonoff, where worked on a number of overseas projects, in Kuwait, Maine, Poland, Minnesota, Utah, the Soviet Union, New Guinea, Chile, Peru, . He then spent a year earning a diploma from Imperial College of Science and Technology in London, and a Masters degree from the University of London. He returned to work and the Klohn and Leonoff head office in Richmond, and by the mid '80s was Manager of their Mining Division. In 1995, he moved to AGRA Earth & Environmental, and in 2008, after "retiring" he took his first job as an independent consultant. He describes various techniques used to construct tailings dams, including some that created dangerous structures, and recounts serious failures in British Columbia, and Brazil between 2014 and 2019 that caused widespread environmental destruction and human fatalities. He also advises new graduate Engineers in Training to "get out in the field, to see how things really work."