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A significant number of deaths and injuries in sewer and watermain work are directly related to trenching. Trenching fatalities are mainly caused by
cave-ins. Death occurs by suffocation or crushing when a worker is buried by falling soil. Over half of all powerline contacts involve buried cable. Before excavating, the gas, electrical, and other services in the area must be accurately located and marked. If the service poses a hazard, it must be shut off and disconnected.

The checklist is designed to capture a point-in-time picture of industrial hygiene programs at a worksite. It can be used by supervisors, Joint Health and Safety Committees or health and safety departments. The checklist can be used anytime, but it is recommended to revisit the checklist if a new operation sets up or significant changes occur in operations or procedures.
The document is divided into categories based on common worksite health hazards. References to legislation and work practices are provided within the checklist.

We all share the goal of making Ontario’s workplaces safe and healthy. The Occupational Health and Safety Act provides us with the legal framework and the tools to achieve this goal. It sets out the rights and duties of all parties in the workplace. It establishes procedures for dealing with workplace hazards, and it provides for enforcement of the law where compliance has not been achieved voluntarily.

“Asbestos” refers to a group of naturally occurring minerals once used widely in the construction industry. Its strength, insulation properties, ability to
withstand high temperatures, and resistance to many chemicals made asbestos useful in hundreds of applications in the construction industry.

Workers who are exposed to extreme cold or work in cold environments may be at risk of cold stress. Extremely cold or wet weather is a dangerous situation that can cause occupational illness and injuries such as hypothermia, frostbite, trench foot, and chilblains.

The Heat Stress Awareness Guide was developed by the members of the Occupational Health and Safety Council of Ontario (OHSCO)* to provide information and advice on managing and controlling heat stress in the workplace.

When winter temperatures drop significantly below normal, staying warm and safe can become a challenge. Extremely cold temperatures
often accompany a winter storm, so you may have to cope with power failures and icy roads. Although staying indoors as much as possible can
help reduce the risk of car crashes and falls on the ice, you may also face indoor hazards. Many homes will be too cold—either due to a power failure or because the heating system isn’t adequate for the weather. When people must use space heaters and fireplaces to stay warm, the risk of household fires increases, as well as the risk of carbon monoxide poisoning.