SILICA IN THE WORKPLACE
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365-AXJ-01-iGDO © 2020, Workplace Safety & Prevention Services (WSPS)
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WSPS.CA
C. PERSONAL HYGIENE FACILITIES AND PRACTICES
Particulate materials possibly containing silica adhere to both clothing and exposed skin as a result of
daily activities. While inhalation is the only plausible route of exposure to crystalline free silica, dust
adhering to clothing can cause exposure due to resuspension.
1. Clothing
Dust-laden clothing is likely to be a source of continuing exposure following motions which cause
the dust to become resuspended. Loose dust can be easily removed from clothing or skin by use of
a vacuum cleaning system. The use of compressed air to blow dust from skin or clothing must be
prohibited. A policy regarding removal of work clothing from the workplace must be considered in
light of the potential presence of other toxic materials in the dust.
2. Washing Facilities
Skin contamination by dusts containing crystalline free silica is not considered to pose a serious
route of exposure. Washing facilities must be provided and used in consideration of other toxic
materials which may be present in dusts which contaminate the skin. Employees should be
encouraged to wash their hands and arms before eating, drinking, smoking or leaving the workplace.
In some cases, employees may be required to shower before leaving the workplace.
3. Eating Facilities
Consumption of food and beverages and smoking in the working area should be prohibited. The
severity of response to exposure to crystalline free silica is affected by smoking. While ingestion
is not considered a credible route of exposure, ingestion may be an important consideration in
exposure to other toxic agents, which may be present in the dust. Eating, drinking or smoking when
one is exposed to toxic materials can provide an important route of exposure.
Specially designated eating and drinking areas, remote from the workplace, should be provided.
