Related Clues:
- Cap site
- Drilling result
- Natural fuel source
- Petroleum source
- Boring thing
- Derrick setting
- Spindle-top spouter
- Crude structure?
- 'There Will Be Blood' site
- Permian Basin sight
- Wildcat, e.g.
- The way to make you rich and the way to stop you squeaking
- Keep properly lubricated if you want it to pay you
- It'll pay you to keep it properly lubricated
- That'll make you rich if you keep it properly lubricated