Silica Medical Surveillance Toolbox Talk

Respirable crystalline silica is a serious health hazard that can cause permanent lung disease and other long-term medical conditions. Because many silica-related illnesses develop gradually and may not produce symptoms until significant damage has occurred, medical surveillance is an important part of protecting workers who have occupational exposure to respirable crystalline silica. Medical surveillance helps identify potential health concerns early and supports the effectiveness of a company's silica exposure control program.

This toolbox talk reviews the purpose of silica medical surveillance, the responsibilities of workers and supervisors, and the importance of continuing to use exposure controls even when no symptoms are present.

Why This Matters

• Silica-related diseases may develop without noticeable early symptoms.
• Medical surveillance helps identify potential health concerns at an early stage.
• Health monitoring supports evaluation of silica exposure control programs.
• Early identification of health issues allows for timely medical evaluation and workplace follow-up.
• Medical surveillance complements, but does not replace, engineering controls, safe work practices, and respiratory protection.

Health Risks of Silica Exposure

• Silicosis caused by inhaling respirable crystalline silica.
• Lung cancer associated with occupational silica exposure.
• Chronic obstructive pulmonary disease (COPD).
• Reduced lung function and breathing difficulties.
• Kidney disease associated with long-term silica exposure.
• Greater health risks from prolonged or repeated exposure.
• Exposure that may occur even when visible dust appears minimal.
• Health effects that may not appear until years after exposure.

Safety Checklist

Before Silica-Generating Work

• Understand the company's silica exposure control procedures.
• Participate in medical surveillance when required by company policy or applicable regulations.
• Attend silica hazard awareness and respiratory protection training.
• Use engineering controls such as water suppression or local exhaust ventilation.
• Wear required personal protective equipment (PPE), including respiratory protection when required.
• Ask questions if you are unsure about silica hazards or health monitoring requirements.

During Employment

• Continue using required dust control measures during all silica-generating tasks.
• Report damaged engineering controls or excessive airborne dust immediately.
• Inform your supervisor if work activities change and may increase silica exposure.
• Attend scheduled medical surveillance appointments when applicable.
• Report work-related respiratory concerns according to company procedures.
• Follow respiratory protection program requirements, including inspections, fit testing where required, and proper respirator use.

Crew Talking Points

• Why is medical surveillance important even if workers feel healthy?
• Which tasks on today's jobsite generate respirable crystalline silica?
• What engineering controls are being used to reduce silica exposure?
• Why should workers continue using dust controls even after participating in medical surveillance?
• Who should workers contact with questions about silica health monitoring?
• Speak up immediately if you notice excessive dust, ineffective controls, or develop work-related respiratory concerns.

Stop Work If

• Required engineering controls are missing or not functioning properly.
• Silica-generating work is producing uncontrolled airborne dust.
• Required respiratory protection is unavailable or cannot be used correctly.
• Workers are instructed to perform silica-generating tasks without the required exposure controls.
• Work conditions change significantly and existing controls no longer provide adequate protection.
• You are unsure how to safely perform a silica-generating task.

Final Reminder

Medical surveillance is an important tool for protecting workers who may be exposed to respirable crystalline silica, but it is only one part of a comprehensive exposure control program. Continue using engineering controls, follow safe work practices, wear required respiratory protection, participate in health monitoring when applicable, and report concerns promptly. Preventing silica exposure remains the best way to protect your long-term health.