During the winters of 1972/73 and 1973/74, the University of Saskatchewan Vehicle Accident Study Team was commissioned by the Canada Ministry of Transport to conduct a study of snowmobile accidents in Central Saskatchewan. This paper draws upon the findings from 220 accidents and uses specific cases to illustrate typical mechanisms of injury infliction. Emphasis is upon the injury-producing effect of the driver and machine configuration prior to and during the accident. Where applicable, reference is made to features on the snowmobile which may be associated with the injury. A brief statistical summary of the overall snowmobile injury situation in Central Saskatchewan is provided with reference to driver age, alcohol involvement, accident configuration, injury severity and lost manhours. An explanation is offered for the surprising number of accidents occurring as a result of visibility conditions in the Saskatchewan winter of 1973/74.