# Hazard Communication & Other Site Hazards
## Hazard Communication (HazCom)
You have a **right to know** about the chemicals you work around:
- **Labels** (GHS pictograms) on containers.
- **Safety Data Sheets (SDS)** — accessible on site for every hazardous chemical.
- **Training** on the hazards and how to protect yourself.
## Silica
Cutting, grinding, or drilling concrete/masonry releases **respirable crystalline silica**, which causes lung disease. Control it with **water (wet cutting)**, dust collection, and respirators.
## Other common hazards
- **Ladders & scaffolds** — inspect, use correctly, don't overload.
- **Housekeeping** — clean sites prevent trips, fires, and struck-by injuries.
- **Heat** — water, rest, shade; know the signs of heat illness.
- **Confined spaces** — test the atmosphere and follow entry procedures.
**Takeaway:** Know your chemicals (labels + SDS), control silica dust, and respect ladders, housekeeping, heat, and confined spaces.
> ⚠️ *Educational overview — this is **not** official OSHA certification. Get OSHA 10/30 training from an OSHA-authorized trainer, and always follow your employer's safety program and current OSHA standards (29 CFR 1926 for construction).*
