| Cutting, drilling, or grinding concrete, masonry, or stone | Fine mineral dust, potentially including respirable crystalline silica | When dust controls do not adequately control airborne exposure, or when a risk assessment requires respiratory protection | Use suitable wet methods or local exhaust where practical. Select respiratory protection based on the assessment and applicable workplace requirements. |
| Sanding or cutting wood | Wood dust and fine sanding particles | During dusty operations, especially with power tools or limited ventilation | Use tool-connected extraction or effective ventilation. Choose a properly fitted particulate respirator if additional protection is needed. |
| Dry sweeping or cleaning dusty areas | Settled dust stirred back into the air | When cleanup may create airborne dust that cannot be controlled by safer cleaning methods | Prefer damp cleaning or a suitable HEPA-filtered vacuum over dry sweeping or compressed air. Assess the dust before cleanup. |
| Handling or installing fibrous insulation | Fibers and other airborne particles that may irritate the respiratory tract | When work creates airborne fibers, particularly in enclosed or poorly ventilated areas | Follow the product safety information. Eye, skin, and respiratory protection may all be appropriate depending on the material and task. |
| Grain handling, feed handling, or dusty agricultural work | Grain dust, plant particles, and potentially mold or other biological material | When handling or moving material creates visible or sustained airborne dust | Use ventilation and dust-control methods where possible. The required protection depends on the specific material and exposure assessment. |
| Demolition or renovation of older materials | Potentially hazardous dust, which may include asbestos- or lead-containing material | Only under a task-specific assessment and the required regulated work controls | Do not rely on an ordinary dust mask. Stop work if hazardous material is suspected and follow applicable testing, containment, and respiratory-protection requirements. |