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Certain materials, such as some chemical gasses, are so toxic that their uncontrolled or accidental release into the environment can cause a serious threat to the life and health of people exposed to them. Public health workers help prepare written plans to be put into use in the event a toxic substance is accidentally released into the environment. If such an emergency occurs, local health unit workers will warn the public and take action to locate and control the toxic substance to lessen the danger to the community. |
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