When encountering unknown containers with no labels, which resource should you consult for identification cues?

When encountering unknown containers with no labels, which resource should you consult for identification cues?

• A. Emergency Response Guidebook (ERG).
• B. OSHA regulations.
• C. Local police.
• D. Manufacturer's MSDS.

Answer: (A)

Unknown containers without labels require relying on identification cues to determine hazards and actions to take. The Emergency Response Guidebook is specifically designed for exactly this situation. It funnels on-scene clues—such as container type, packaging, color coding, placards, and available shipping papers—into practical, immediate guidance. It provides guide numbers that link to hazard information, protective actions, and recommended PPE, as well as initial isolation distances and steps to take to keep responders safe. The other resources don’t offer the on-scene, cue-based identification framework you need: OSHA regulations cover general safety and hazard communication standards, not rapid material identification at an incident; local police can help secure the area but don’t supply hazard identification guidance; and a manufacturer’s MSDS contains product-specific data only if the exact chemical is known and documented, which isn’t the case with unknown containers. Using the ERG helps you quickly translate what you see into safer, informed actions.