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Crystalline silica (quartz) dust
Because crystalline silica is a basis component of sand and granite, many activities at construction sites produce dust containing crystalline silica.
Trenching, sawing and boring of material containing crystalline silica can produce dust containing crystalline silica.
If dust which contains crystalline silica is present there are guidelines which should be followed.
Be aware of the health effects of crystalline silica and that smoking adds to the damage.
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