About Tri-ValleyTri-Valley Corporation explores for and produces oil and natural gas in California and has two exploration-stage gold properties in Alaska. Tri-Valley is incorporated in Delaware and is publicly traded on the NYSE Amex exchange under the symbol "TIV." Our Company website, which includes all SEC filings, is www.tri-valleycorp.com. About US Gold US Gold’s objective is to qualify for inclusion in the S&P 500 by 2015. US Gold explores for gold and silver in the Americas and is advancing its El Gallo Project in Mexico and its Gold Bar Project in Nevada towards production. US Gold has a strong treasury with approximately $108 million in cash and gold and silver bullion. The Company’s shares are listed on the New York (NYSE) and the Toronto Stock Exchanges (TSX) under the symbol UXG, trading 1.6 million shares daily during the past twelve months. US Gold’s shares are included in the S&P/TSX and Russell indices and Van Eck’s Junior Gold Miners ETF. Forward-Looking Statements All statements contained in this press release that refer to future events or other non-historical matters are forward-looking statements. By way of example, statements contained in this press release related to field work planning and exploration, and the timing, amount, and results of the core drilling, are forward-looking statements. Although the Company does not make forward-looking statements unless it believes it has a reasonable basis for doing so, the Company cannot guarantee their accuracy. These statements are only predictions based on management’s expectations as of the date of this press release, and involve known and unknown risks, uncertainties and other factors, including: the Company’s ability to obtain additional funding; imprecise estimates of oil reserves; fluctuations in oil prices; drilling hazards such as equipment failures, fires, explosions, blow-outs, and pipe failure; shortages or delays in the delivery of drilling rigs and other equipment; problems in delivery to market; adverse weather conditions; compliance with governmental and regulatory requirements; the availability of equipment and other resources; unexpected geologic formations or hydrologic conditions; and such other risks and factors that are discussed in the Company’s and US Gold’s filings with the US Securities and Exchange Commission. Except as required by law, the Company undertakes no obligation to update or revise publicly any of the forward-looking statements after the date of this press release to conform such statements to actual results or to reflect events or circumstances occurring after the date of this press release.