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SALT LAKE CITY (AP) -- Fog has caused a health advisory to be issued for Salt Lake and Davis counties.
The Utah Division of Air Quality has issued a "yellow" alert for both counties.
The health advisory warns people with respiratory or heart disease, the elderly and children to reduce prolonged or heavy exertion outdoors.
On "yellow" days, people are asked to voluntarily refrain from burning wood and coal in their stoves and fireplaces.
People are also asked to reduce vehicle use.
Industries that release emissions into the air are also asked to alter their operations in order to reduce pollution.
Utah, Weber and Cache counties are having a "green" day, which means they have healthy air conditions.
(Copyright 2005 by The Associated Press. All Rights Reserved.)
