| JSC Ekaterinburg Non-Ferrous Metals Processing Plant |
| Alex Stewart International |
| Alfred H Knight |
| Allgemeine Gold- und Silberscheideanstalt |
| ALS Inspection UK |
| Arc Metal |
| Aurubis |
| Baird & Co |
| Brink’s Limited |
| CME |
| Degussa Sonne/Mond Goldhandel |
| Eurolab srl |
| Heimerle + Meule |
| Hensel Recycling |
| IKOI |
| Inspectorate |
| Johnson Matthey |
| JSC Ekaterinburg Non-Ferrous Metals Processing Plant |
| Mairec |
| Malca-Amit |
| Mastermelt |
| Metalor Technologies |
| Pamp |
| R.S. Bruce (Metals & Machinery) |
| Safimet |
| Schneider + Cie |
| Scotiabank |
| SGS Group Management |
| Techemet Limited |
| The Royal Mint |
| Thomson Reuters |
| Umicore |
| Valcambi |
| Zimmer Katalysatoren-Recycling |
