EX-21.1 2 a2213728zex-21_1.htm EX-21.1
QuickLinks -- Click here to rapidly navigate through this document


Exhibit 21.1

URANIUM RESOURCES, INC.

Subsidiaries of the Registrant

Subsidiary Name
  Jurisdiction   Ownership

URI, Inc. 

  Delaware   100% by Uranium Resources, Inc.

Hydro Resources, Inc. (d/b/a HRI, Energy, Inc.)

  Delaware   100% by URI, Inc.

URI Minerals, Inc. 

  Delaware   100% by Uranium Resources, Inc.

Hydro Restoration Corporation

  Delaware   100% by Uranium Resources, Inc.

Belt Line Resources, Inc. 

  Texas   100% by Uranium Resources, Inc.

Uranco, Inc

  Delaware   100% by Uranium Resources, Inc.

HRI-Churchrock, Inc. 

  Delaware   100% by Uranium Resources, Inc.

URI Neutron Holdings I, Inc. 

  Delaware   100% by Uranium Resources, Inc.

URI Neutron Holdings II, Inc. 

  Delaware   100% by URI Neutron Holdings I, Inc.

Neutron Energy, Inc. 

  Nevada   100% by URI Neutron Holdings II, Inc.

Cibola Resources LLC

  Delaware   100% by Neutron Energy, Inc.



QuickLinks