EXHIBIT 21.1

SUBSIDIARIESOFMOLYCORP, INC.

1. RCF IV Speedwagon Inc., a Delaware corporation

2. Molycorp Minerals LLC, a Delaware limited liability company

3. Molycorp Silmet AS, an Estonian corporation

4. Molycorp Luxembourg Holdings S.a.r.l, a Luxembourg limited liability holding company

5. MCP Exchangeco Inc., a British Columbia, Canada corporation

6. MCP Canada Limited Partnership, a British Columbia, Canada limited partnership

7. Molycorp Minerals Canada ULC, a British Columbia, Canada unlimited liability corporation

8. MCP Canada Holding ULC, a British Columbia, Canada unlimited liability corporation