Complete online version:    • Kickback  
A severe kickback is the most dangerous hazard of all for a chainsaw operator. The incident occurs in a fraction of a second and can cause injuries ranging from cuts and scrapes to amputations and death. This compelling 13minute video opens with a recreation of a fatal kickback incident. It then reviews important information every chainsaw operator needs to know about kickback, including how and why it happens and how to prevent it.

http://www.healthandsafetyontario.ca/wsn