Across
- 3. Something that can result to a bad thing
- 6. Something that can result to a good thing
- 7. black or brownish-black sedimentary rock
- 9. Tunnels have not been properly secured, the result can a cave-in causing a mine shaft to close
- 10. fossil fuel
Down
- 1. Dangerous jobs (especially coal mining) each year in various dangerous jobs
- 2. Naturally occurring materials where you can find minerals or metals.
- 4. working without direct control
- 5. Removing conditionally
- 8. hazardous waste that contains radioactive material