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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Notice of Effectiveness
Effectiveness Date: April 16, 2015 9:00 A.M.
Form: F-10
CIK: 0001322422
Company Name: HudBay Minerals Inc.
File Number: 333-203278
CIK: 0001322421
Company Name: Hudson Bay Mining & Smelting Co., LTD
File Number: 333-203278-03
CIK: 0001324043
Company Name: Hudson Bay Exploration & Development CO LTD
File Number: 333-203278-02
CIK: 0001563753
Company Name: HudBay Marketing & Sales Inc.
File Number: 333-203278-01