| Symbol | Name | Country | Exchange |
|---|---|---|---|
| RDUFF | Radius Gold Inc | US | OTC |
| RIGMF | Ridgestone Mining | US | OTC |
| RIINF | Braveheart Resources Inc | US | OTC |
| RMETF | Rackla Metals Inc | US | OTC |
| RMGGF | Resolute Mining Ltd | US | OTC |
| RMGGY | Resolute Mining Ltd | US | OTC |
| RTTGF | RTG Mining Inc | US | OTC |
| RXRLF | Rex Minerals Ltd Me | US | OTC |
| RYDAF | Royal Dutch Shell plc | US | OTC |
| RYMM | Royal Mines & Minerl | US | OTC |
| RYOOF | Rio Silver Inc | US | OTC |
| SEPOF | Blumetric Environmntl Inc | US | OTC |
| SHVLF | Starcore Intl Mines | US | OTC |
| SLTFF | Pistol Bay Mining | US | OTC |
| SLVDF | Silver Dollar Res Inc | US | OTC |
| SLVRF | Silver One Resources Inc | US | OTC |
| SNNGF | PPX Mining Corp | US | OTC |
| SOMLF | SECOM CO., LTD | US | OTC |
| SOMLY | SECOM CO., LTD | US | OTC |
| SRCRF | Scorpio Gold Corp Ne | US | OTC |