Basic Safety

4. High Efficiency Particulate Arrestance Filters
6. A formal procedure for taking equipment out of service
7. Spaces A space that has been evaluated and found to have actual or potential hazards
8. A room or area that is used for scientific research
9. A process using heat in excess of 800 degrees to melt a filler metal
10. A structure used to protect workers in trenches
11. Person who directs a vehicle when vison is blocked
14. Mid-level, horizontal board
16. A line attached to a tool or object to pull up

1. A serious lung disease resulting from the inhalation of crystalline silica particles
2. An official authorization from the site manager to perform work that may pose a fire hazard
3. A support system designed to prevent a trench cave-in
5. Work done near a hazard bit not actually in contact with it
12. The joining of metal parts by fusion
13. Sock A cloth cone open at both ends mounted in a high place to show which direction the wind is blowing
15. Conducting connection between electrical equipment or an electrical circuit and the earth