ABSTRACT
Ventilation-and its siblings heating and air conditioning and humidity control-have an extraordinary role in workplace safety and health, including preventing or slowing mold growth; supplying air to certain types of respirators; collecting contaminants so that people stay healthier and environments stay cleaner; diluting airborne substances so that they are less hazardous to breathe or less likely to ignite; and keeping people warm in truck cabs or in underground vaults or cool while they work in hot environments.
