Dust entry

Asphalt-roofing mineral parting-agent dust

Inorganic mineral dust released when talc, sand, or other mineral parting agents are applied during asphalt-roofing-product manufacture.

Airborne form

dust

The form describes what is suspended in air at the point of exposure. A material can produce more than one form, such as dust during handling and fume during heating.

Health effects

particulate exposure concerneye irritation concernrespiratory exposure concern

Evidence

NIOSH describes mineral parting-agent application in asphalt roofing manufacture as a source of inorganic mineral dust that contributes to airborne particulate concentrations in application and cooling areas.

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5.5 Surfacing and Subsequent Processes · 3

The application of the mineral-parting agents generates the release of inorganic mineral dust. The dust contributes to the airborne concentration of particulates in the mineral application and cooling process areas of the plant. Local exhaust ventilation is generally installed at granule applicators, slate drums, dust drums, backdust applicators, and transfer rolls to reduce dust exposure.

Controls

enclose mineral-parting-agent application
use local exhaust ventilation and dust collection
maintain baghouse and transfer-point controls
avoid dry cleanup that resuspends settled dust
use appropriate eye and respiratory protection