Operation Musk Ox

[2] The main expedition, led by Patrick Douglas Baird, travelled 3,100 miles (5,000 km), starting from Churchill, Manitoba, first to Baker Lake, Northwest Territories where the number of vehicles was reduced to ten.

[2] Two soldiers were killed in an accidental fire incident in Churchill, just before the main group departed.

Many of those on the expedition suffered from carbon monoxide poisoning because wind blew exhaust inside the snowmobiles.

On April 4, a Port Radium local drowned while trying to help rescue one of the Penguin snowmobiles which had fallen through the ice on Great Bear Lake.

[1] The mission demonstrated that it was highly unlikely that Soviet forces would attempt an overland invasion of North America through the Arctic.

Tracked military snow machines (Penguins) on ice during RCAF Operation Muskox, Port Radium, Great Bear Lake, 1946.
Operation Muskox, Eldorado Expedition - supplies being unloaded from 'Eldorado Mining & Outfitting' Norseman CF-BZW on skis in the bush near Port Radium