Respirable crystalline silica: the rules that changed drilling
Silica is the reason dust extraction stopped being optional.
What it is
Crystalline silica occurs naturally in concrete, brick, stone, mortar, tile and engineered stone. Cutting, grinding and drilling these materials produces respirable particles small enough to reach deep lung tissue.
Exposure is associated with silicosis, chronic obstructive pulmonary disease and lung cancer. The damage is cumulative and irreversible.
The regulatory shape
Most industrialised jurisdictions now set an occupational exposure limit for respirable crystalline silica and require employers to assess and control exposure.
The control hierarchy consistently places engineering controls — capture at source, water suppression — above respiratory protective equipment. RPE is the last layer, not the first.
What this means for drilling
Drilling concrete without controls is a recognised high-exposure task. On-tool extraction is the standard engineering control.
A tool that seals against the surface before drilling is unusually well positioned to capture at the hole — see dust collection.
Your obligation, not ours
Specific limits, monitoring duties and record-keeping vary by country and change over time. Check the current requirements in your jurisdiction — this page is background, not legal advice.
Questions about this
Which materials produce crystalline silica?
Concrete, brick, mortar, natural stone, tile and — in high proportion — engineered stone. Drilling, cutting and grinding all release it.
Is extraction legally required?
Requirements vary by jurisdiction, but the control hierarchy consistently places engineering controls such as on-tool extraction above respiratory protection. Check your national regulator.