| 1. | Clean up spilled oil by bailing it into barrels. |
| 2. | Unscrew or tighten pipes, casing, tubing, and pump rods, using hand and power wrenches and tongs. |
| 3. | Bolt together pump and engine parts. |
| 4. | Walk flow lines to locate leaks, using electronic detectors and making visual inspections. |
| 5. | Move pipes to and from trucks, using truck winches and motorized lifts, or by hand. |
| 6. | Dismantle and repair oil field machinery, boilers, and steam engine parts, using hand tools and power tools. |
| 7. | Dig drainage ditches around wells and storage tanks. |
| 8. | Keep pipe deck and main deck areas clean and tidy. |
| 9. | Guide cranes to move loads about decks. |
| 10. | Supply equipment to rig floors as requested, and provide assistance to roughnecks. |
| 11. | Dig holes, set forms, and mix and pour concrete into forms to make foundations for wood or steel derricks. |
| 12. | Cut down and remove trees and brush to clear drill sites, to reduce fire hazards, and to make way for roads to sites. |
| 13. | Bolt or nail together wood or steel framework to erect derricks. |