Mary Edith Tyrrell (1870 – 1945)

Career options for women were limited in the 1890s when Edith Tyrrell was introduced into Canada’s fledgling mining industry as the young wife of Joseph Burr Tyrrell.

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Edward G. Thompson (b. 1936)

For more than half a century, Edward Thompson has contributed to the progress and prestige of the Canadian mining industry as an explorer, mine developer, company builder, and dedicated supporter of industry causes and associations.

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Noah A. Timmins (1867 – 1936)

Recognized as the leader of a group of five men who invested their energies and resources in founding first the LaRose silver mine in Cobalt and later the Hollinger gold mine in Timmins, Noah Timmins is unquestionably a founding father of this country’s mining industry.

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Joseph Burr Tyrrell (1858 – 1957)

Joseph Tyrrell has been variously described as the doyen of Canadian mining men, the dean of mining, the man who conquered the Canadian North, Canada’s senior geologist, and the last of the great breed of map­making explorers and first of the modern mineral­finders and technologists.

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James Edgar Thomson (1906 – 1982)

James Thomson embodied dedication to the mining industry throughout his 44-year career with the Ontario Department of Mines (ODM), later the Ontario Geological Survey (OGS). He revived, enlarged and modernized ODM, transforming it into an increasingly important body recognized in Canada and internationally for its technical excellence.

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John Fairfield Thompson (1891 – 1968)

During a distinguished career that spanned more than five decades, John Fairfield Thompson led Inco through a period of phenomenal growth and immense social, economic and technical change. As a young scientist, he explored the potential of nickel and helped discover new uses for nickel-based alloys.

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D. Grenville Thomas (b. 1941)

Grenville Thomas left the Old World as a young mining engineer to become a pioneering prospector and company-builder in the New World, where he made a series of important mineral discoveries and contributed to the advancement of Canada’s fledgling diamond industry.

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David A. Thompson (b. 1939)

For more than a quarter century, David A. Thompson contributed to the spectacular growth and prudent financial management of two of Canada’s oldest continuously operating mining companies.

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Timmins Mine Finders / Builders

The Porcupine Gold Rush of 1909 was a transformative event in Canadian history, with three gold mines discovered by separate prospecting parties a few miles from each other.

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Ian Telfer (b. 1946)

Ian Telfer earned his reputation as a financially astute and visionary mining entrepreneur by building a series of companies through timely acquisitions and value-driven mergers.

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