In 1944, Caywood became involved with air services for Eldorado Mining and Refining, resupplying the uranium mine on Great Bear Lake as part of the Manhattan Project.
The Echo Bay Mines Limited company was organized in 1964 to develop a silver deposit at Great Bear Lake, Northwest Territories, which became known as the Echo Bay Mine.
From 1956 to 1962, he was a contract pilot and, from 1962 to 1970, flew for a fishing lodge on Great Bear Lake.
At the end of March 1930, LaBine traveled to Great Bear Lake in the Northwest Territories to do some prospecting.
Some time after taking off from Cambridge Bay in bad weather and low cloud, the plane crashed into a hillside near Hottah Lake, just south of Great Bear Lake.
He was involved in several historic events between 1928 and 1931, including piloting the first multi-engined return flight Winnipeg, Manitoba to Vancouver, British Columbia; the first flight around Great Bear Lake; and the first over-the-mountains flight from Aklavik, Northwest Territories to Dawson City, Yukon Territory.
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Like other vessels built for service on the MacKenzie River, its tributaries, and Great Bear Lake and Great Slave Lake, she was first built in a shipyard in southern Canada, then disassembled and shipped by rail to riverport on Lake Athabasca, where it empties into the Slave River.
One of the fleets most important ports of call was Port Radium, on Great Bear Lake, the source of much of the Uranium used by the Manhattan Project during World War 2.