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  1. Copper - Wikipedia

  2. Copper | Uses, Properties, & Facts | Britannica

  3. Copper Facts

  4. Facts About Copper - Live Science

  5. Copper Facts: Chemical and Physical Properties - ThoughtCo

  6. Pure Copper - an overview | ScienceDirect Topics

  7. Resources: Standards & Properties - Copper & Copper Alloy ...

  8. Copper - Element information, properties and uses | Periodic Table

  9. Copper - Specifications, Properties, Classifications and Classes - AZoM.com

  10. From Ore to Finished Product - Copper