Across
- 4. a reddish brown material
- 5. a material that is used for many things
- 6. a natural black rock
- 7. melting metal to change its shape
- 8. combining two metals
- 9. taking materials from the ground
Down
- 1. a period in time
- 2. shaping metals to different shapes
- 3. a metal made of copper and tin
- 5. something something metal like