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Across 2. In charge of drainage 4. Something that may cause harm 5. A danger of working with electricity 8. They've got the power 9. Be aware, this can be deadly! 10. Hanging the doors 12. Another word for a Carpenter

Down 1. Concrete block personnel 3. The hazard is the fall 6. Best left to the plasterer 7. The chance harm may happen 11. Ear defenders are a useful for blocking this out