UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Notice of Effectiveness
Effectiveness Date: April 23, 2009 4:30 P.M.
Form: S-3
CIK: 0000314203
Company Name: U S GOLD CORP
File Number: 333-157998
CIK: 0001360405
Company Name: US GOLD CANADIAN ACQUISITION CORP
File Number: 333-157998-10
CIK: 0001086913
Company Name: NEVADA PACIFIC GOLD LTD
File Number: 333-157998-09
CIK: 0001274011
Company Name: TONE RESOURCES LTD
File Number: 333-157998-08
CIK: 0001298093
Company Name: White Knight Resources Ltd.
File Number: 333-157998-07
CIK: 0001417238
Company Name: US Gold Alberta ULC
File Number: 333-157998-06
CIK: 0001416052
Company Name: Tonkin Springs Gold Mining CO
File Number: 333-157998-05
CIK: 0001416053
Company Name: Tonkin Springs Venture Limited Partnership
File Number: 333-157998-04
CIK: 0001416054
Company Name: Tonkin Springs LLC
File Number: 333-157998-03
CIK: 0001416055
Company Name: U.S. Environmental CORP
File Number: 333-157998-02
CIK: 0001360408
Company Name: US GOLD HOLDINGS CORP
File Number: 333-157998-01