1. Logging workers. 2. Fishers and related fishing workers. 3. Aircraft pilot and flight engineers. 4. Roofers. 5. Structural iron and steel workers. 6. Refuse and recyclable material collectors. 7. Electrical power-line installers and repairers. 8. Drivers/sales workers and truck drivers. 9. Farmers, ranchers, and other agricultural managers. 10. Construction laborers