ABSTRACT
Fugitive dust that deposits large particles on buildings, vehicles, and materials is a nuisance. Inhalation of dust can be debilitating, especially when the dust contains toxic elements and minerals. Fugitive dust consists of geological material suspended into the atmosphere by wind action and by human activities. Most of the dust soon deposits within a short distance of its origin, yet a portion of it can be carried many miles by atmospheric winds. A variation of the source enclosure method to control fugitive dust emissions involves applying wind fences. Porous wind fences significantly reduce emissions from active storage piles and exposed ground areas. Dust from unpaved roads or uncovered areas can be reduced or prevented by chemical stabilization. Chemical suppressants can be categorized as salts, lignin sulfonates, wetting agents, petroleum derivatives, and special mixtures. Manufacturers generally provide information for typical applications, dilution and application rates, and costs.
