The small personalized snowmobile of the 1970's had a modest beginning in two areas of North America in 1959. In this year Armand Bombardier in Quebec and Carl Eleasson in Wisconsin each produced about 200 machines for sale. The comcept grew, and by 1970 some 1,500,000 machines have been produced and sold.

This new form of transport and sport has brought injury to more than a few drivers and passengers. The purpose of the paper is to review 400 injury producing snowmobile accidents from Ontario in the winter of 1969-70. These include two of the 14 deaths recorded in Ontario from the same cause in the same period. The mechanism of injury, the type of injury, and methods of prevention are discussed.