age of metallurgy

123456789
Across
  1. 4. a reddish brown material
  2. 5. a material that is used for many things
  3. 6. a natural black rock
  4. 7. melting metal to change its shape
  5. 8. combining two metals
  6. 9. taking materials from the ground
Down
  1. 1. a period in time
  2. 2. shaping metals to different shapes
  3. 3. a metal made of copper and tin
  4. 5. something something metal like