 If your workers are exposed to dust, gas, fumes or vapours, you must implement control measures. You can eliminate the risk by changing work practices to stop dust, gas, fumes or vapours being created. Replace materials with something less hazardous. Use engineering controls like local exhaust ventilation. Isolate the hazard in an enclosed area. Use administrative controls such as work processes and policies that reduce exposure. If there is still a risk, provide workers with suitable and properly fitted face masks to ensure they are fully protected. For more information on how to manage hazards, visit our website.