UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Notice of Effectiveness
Effectiveness Date: August 3, 2012 4:00 P.M.
Form: S-3
CIK: 0000314203
Company Name: McEwen Mining Inc.
File Number: 333-182192
CIK: 0001552364
Company Name: McEwen Mining-Minera Andes Acquisition Corp.
File Number: 333-182192-12
CIK: 0001360405
Company Name: US GOLD CANADIAN ACQUISITION CORP
File Number: 333-182192-11
CIK: 0001086913
Company Name: NEVADA PACIFIC GOLD LTD
File Number: 333-182192-10
CIK: 0001274011
Company Name: TONE RESOURCES LTD
File Number: 333-182192-09
CIK: 0001298093
Company Name: White Knight Resources Ltd.
File Number: 333-182192-08
CIK: 0001417238
Company Name: US Gold Alberta ULC
File Number: 333-182192-07
CIK: 0001416052
Company Name: Tonkin Springs Gold Mining CO
File Number: 333-182192-06
CIK: 0001416053
Company Name: Tonkin Springs Venture Limited Partnership
File Number: 333-182192-05
CIK: 0001416054
Company Name: Tonkin Springs LLC
File Number: 333-182192-04
CIK: 0001416055
Company Name: U.S. Environmental CORP
File Number: 333-182192-03
CIK: 0001030219
Company Name: MINERA ANDES INC /WA
File Number: 333-182192-02
CIK: 0001552383
Company Name: McEwen Mining (Alberta) ULC
File Number: 333-182192-01