PPE reduces personal exposure, but it does not stop dust being generated, spreading to others or contaminating the workplace. Relying on masks alone is fragile: seals fail, wear time is limited, and bystanders remain exposed.

Use a three-layer control strategy

1) Capture at source

• Fit extraction to tools and verify airflow under load; slower, controlled cuts produce less dust.
• Use water suppression where safe, and redesign processes to avoid dusty steps.

2) Capture in the air

• Deploy local exhaust ventilation, negative air machines and air scrubbers to reduce background levels.
• For fine or carcinogenic dusts, specify appropriate filtration and consider H14 filters to protect other workers and adjacent areas.

3) Capture on surfaces

• Stop re-suspension: vacuum with industrial units and sealed bags; never sweep or use compressed air.
• Plan filter maintenance and waste handling so performance stays consistent.

Where PPE still fits

Tight-fitting RPE (typically FFP3 or reusable) is the backstop for residual risk, short peaks and emergency interventions. It must be face-fit tested, maintained and supervised. Engineering controls should remain the default choice; engineering controls like LEV and negative pressure protect everyone in the area, not just the wearer.

Practical takeaways

• Design out dust first; fit LEV to every dusty tool.
• Use air cleaning to protect bystanders and keep background levels low.
• Vacuum-only clean-up prevents re-exposure and site contamination.
• Keep PPE for residual risk and ensure fit-testing and maintenance.

A control-led approach is more reliable than mask-led protection and is easier to supervise across busy sites.