Here’s a list of some of the most well-known and leading global suppliers in the metal refining industry:

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Leading Global Suppliers of Metal Refining

1. Rio Tinto Group

   • Headquarters: London, United Kingdom
   • Specialties: Aluminum, Copper, Diamonds, Gold, Iron ore, Lithium

2. BHP Group

   • Headquarters: Melbourne, Australia
   • Specialties: Copper, Iron Ore, Nickel, Potash, and Metallurgical Coal

3. Glencore plc

   • Headquarters: Baar, Switzerland
   • Specialties: Base metals, Ferroalloys, Precious metals, and Oil

4. Norilsk Nickel

   • Headquarters: Moscow, Russia
   • Specialties: Nickel, Palladium, Platinum, Copper, and Cobalt

5. Vale S.A.

   • Headquarters: Rio de Janeiro, Brazil
   • Specialties: Nickel, Iron ore, and Copper

6. Teck Resources Limited

   • Headquarters: Vancouver, Canada
   • Specialties: Copper, Zinc, and Metallurgical coal

7. Hindalco Industries Limited

   • Headquarters: Mumbai, India
   • Specialties: Aluminum and Copper

8. Metalloinvest

   • Headquarters: Moscow, Russia
   • Specialties: Iron ore and Steel products

9. Southern Copper Corporation

   • Headquarters: Phoenix, Arizona, USA
   • Specialties: Copper, Molybdenum, and Silver

10. First Quantum Minerals Ltd.

    • Headquarters: Toronto, Canada
    • Specialties: Copper and Nickel ```

This list includes major players known for their global influence and various specialties in metal refining. If you need more detailed information about any specific company or further insights into their operations, feel free to ask!