Hyperdynamics Corporation (NYSE Amex: HDY) today announced the results of a resource evaluation conducted by Netherland Sewell and Associates Inc. (NSAI) of the Company's oil and gas concession offshore Republic of Guinea.

NSAI, a leading provider of reserve audits and exploration resource assessments, conducted a three-month assessment of the prospective oil resources in selected prospects in Hyperdynamics' concession offshore Guinea that resulted in a total of "Best Estimates" for all assessed prospects and leads of 2.3 billion barrels of recoverable unrisked prospective oil resources.

Rexahn Pharmaceuticals, Inc. (NYSE Amex: RNN), a clinical stage pharmaceutical company developing and commercializing potential best in class oncology and CNS therapeutics, today announced that it has submitted a Phase IIb protocol to the U.S. Food and Drug Administration (FDA) for the clinical study of Serdaxin for the treatment of major depressive disorder (MDD).

The Phase IIb study will assess Serdaxin’s efficacy as a treatment for major depressive disorder in approximately 300 subjects. The planned double blind, randomized, placebo-controlled trial will be conducted at multiple sites in the U.S. and will measure the change from baseline on the Montgomery-Asberg Depression Rating Scale (MADRS) as the primary efficacy endpoint.

Rexahn Pharmaceuticals, Inc. (NYSE Amex: RNN), a clinical stage pharmaceutical company developing and commercializing potential best in class oncology and CNS therapeutics, today announced the publication of a research article in Bioorganic & Medicinal Chemistry Letters on the anti-tumor activity of RX-8243 and its analogues.

The article offers data demonstrating that RX-8243, an isoquinolineamine analogue, significantly inhibits the growth of human cancer cells, including paclitaxel (Taxol®) resistant HCT-15 human colorectal cancer cells and the growth of tumor in in vivo model of nude mice injected with paclitaxel-resistant HCT-15 human colorectal cancer cells.

Aurizon Mines Ltd. (TSX: ARZ; NYSE Amex: AZK) is pleased to report further results from the current drilling along the exploration drift on the 810 metre level at its Casa Berardi Mine in north-western Quebec.

Part of the current exploration program is focused along the 123 Zone, which is located approximately 1.0 kilometre east of the West Mine shaft. As at December 31, 2009 the 123 Zone contained inferred mineral resources of 714,000 tonnes at 9.4 grams of gold per tonne for 216,000 ounces using a cut-off grade of 4 grams of gold per tonne. Since February 2010, a total of twenty four (24) holes have been drilled from the 810 and 280 metre levels at an average spacing of 50 to 75 metres with the objective of extending the known mineralization.

Well flows up to 1,077 BOPD from two zones independently without pumps, 850 BOPD comingled; no oil-water contacts identified

Gran Tierra Energy Inc. ("Gran Tierra Energy") (AMEX: GTE; TSX: GTE), a company focused on oil and gas exploration and production in South America, today announced that it had completed initial testing of the Moqueta-2 delineation well in the Moqueta new field discovery on the Chaza Block in the Putumayo Basin, Colombia. Gran Tierra Energy has a 100% working interest and is the Operator of the Chaza Block.

"We are very pleased with the testing result at Moqueta-2, where oil flowed naturally at higher rates without pumps than Moqueta-1. Compared to Moqueta-1, the oil column is thicker and the oil bearing zones are more productive," said Dana Coffield, President and Chief Executive Officer of Gran Tierra Energy.

Geokinetics Inc. (NYSE Amex: GOK) today announced that Petroleos Mexicanos (PEMEX) has awarded its Mexican subsidiary a seismic acquisition contract valued in excess of $110 million for work in Mexico. The project will be for a seamless Ocean Bottom Cable, Transition Zone and land seismic data acquisition survey that is scheduled to commence late in the fourth quarter 2010 and last through early 2012.

Richard F. Miles, President and Chief Executive Officer, commented, "We are especially pleased to have been chosen for this project as this award highlights the strategic rationale behind our recent acquisition of PGS Onshore.

"Sustained solid bidding activity gives us confidence that our backlog will continue to grow and that Geokinetics is well positioned to benefit as the industry continues to recover."

Fronteer Gold (TSX: FRG)(NYSE Amex: FRG) announces that a new drill hole has returned the longest interval of continuous copper-gold mineralization ever intersected at the early-stage Halilaga porphyry project in northwestern Turkey.

Assay highlights from HD-54, drilled within Halilaga's Central Zone, are as follows:

-- 0.26 g/t gold and 0.33% copper over 646.50 metres starting from surface and including: -- 0.65 g/t gold and 0.89% copper over 106.80 metres, including 0.63 g/t gold and 1.50% copper over 33.0 metres; and, -- a deeper zone averaging 0.23 g/t gold and 0.24% copper over 143.70 metres.

Based on the success of this significant hole, the drill plan has been modified and an additional rig has been added to the program, for a total of four rigs.

Neuralstem, Inc. (NYSE Amex: CUR) announced that it has filed an Investigational New Drug (IND) application with the United States Food and Drug Administration (FDA) to begin a Phase I safety clinical trial for chronic spinal cord injury with its spinal cord stem cells. This multicenter Phase I safety trial will enroll a total of 16 long-term, or chronic, spinal cord injury patients, with an American Spinal Injury Association (ASIA) Grade A level of impairment, one-to-two years post-injury. ASIA A refers to a patient with no motor or sensory function in the relevant segments and is considered to be complete paralysis.

"We are filing an application with the FDA to test our spinal cord stem cells in a second medical condition with substantial unmet needs," said Neuralstem CEO and President, Richard Garr. "The proposed trial is primarily designed to test the safety of both our cells and delivery method in chronic spinal cord injury patients."

Great Basin Gold Ltd, ("Great Basin" or the "Company"), (TSX: GBG; NYSE Amex: GBG; JSE: GBG) announces an updated mineral resource estimate for its Burnstone Project in the Mpumalanga Province, South Africa.

The updated mineral resource estimate, inclusive of all drilling and underground evaluation up to June 30, 2010 and at a range of cutoffs, is tabulated below. At a cutoff of 400 cmg/t the total Measured and Indicated Resources has increased by 3% from approximately 11.7 million ounces to 12.1 million ounces of gold.

<< - 0.54 oz/ton gold over 14.8 feet plus 22.0 oz/ton gold over 1.6 feet at 4331 to 4580 feet below surface - - drift to F2 Core Zone reaches halfway point - on schedule to reach target in October 2010 - >>

Rubicon Minerals Corporation (RMX:TSX: / RBY:NYSE-AMEX) is pleased to provide an update of the latest diamond drill results at its 100% owned Phoenix Gold Project, located in the heart of the prolific Red Lake Gold District of Ontario. All new drill results are shown in Table 1 and Figures 1 and 2. Emerging gold zone outlines of the F2 Gold System are shown in Figure 3.

Deep drilling in target area 8 confirms gold mineralizing system continues to depth

Keegan Resources Inc. (TSX: KGN)(Amex: KGN) ("Keegan") is pleased to announce updated assay results from its Esaase drilling program in southwest Ghana. Keegan drilled significant intercepts in all seven drill holes down dip from the existing resource, including 134.8 meters at 1.00 g/t Au, 22 meters of 2.1 g/t Au, and 36 meters of 1.24 g/t Au, as reported in Table 1. Please see a collar location map and cross sections at www.keeganresources.com.

Table 1: Recent assay results from down dip step out and in fill drilling from Keegan's Esaase Project. Only intercepts with grade widths of greater than 8 g/t meter Au are shown. Intercepts with grade-widths of approximately 20 g/t meter Au or higher are marked with (i). Widths are measured in actual drilled meters and grades are reported in g/t Au. All core holes are drilled at an azimuth of approximately 110 degrees at a dip of 45 degrees.

New Gold Inc. ("New Gold") (TSX and NYSE AMEX: NGD) today announces financial and operational results for the second quarter of 2010. New Gold had an excellent second quarter with gold sales of 82,402 ounces at a total cash cost(1) of $491 per ounce, net of by-product sales, resulting in earnings from mine operations of $35.9 million and cash flow from operations of $38.8 million. New Gold is also pleased to reiterate its 2010 full year guidance of 330,000 to 360,000 ounces of gold production at a total cash cost(1) of $445 to $465 per ounce sold, net of by-product sales.

Endeavour Silver Corp. (TSX: EDR)(NYSE Amex: EXK)(DBFrankfurt: EJD) announced today its financial and operating results and unaudited financial statements for the Second Quarter, 2010. Endeavour owns and operates two high-grade, underground, silver-gold mines in Mexico, the Guanacevi Mines in Durango State and the Guanajuato Mines in Guanajuato State.

The financial results are expressed in US dollars ("US$") and are based on Canadian generally accepted accounting practices (Canadian "GAAP"). Shareholders are referred to the Company's website for more details: Second Quarter 2010 Financial Statements - http://www.edrsilver.com/s/FinancialStatements.asp and Management Discussion and Analysis ("MD&A") - http://www.edrsilver.com/s/MDA.asp.

Mountain Province Diamonds Inc. ("Mountain Province", the "Company") (TSX: MPV, NY-AMEX: MDM) today announced the results of an updated independent valuation of the diamonds recovered from the Gahcho Kué Project during the exploration phase. The valuation was conducted by WWW International Diamond Consultants Ltd. and took place at the London offices of the Diamond Trading Company in early April, 2010. All diamond values presented below are based on the WWW Price Book as at 13 April, 2010.

Commenting, Mountain Province President and CEO, Patrick Evans, said: "We are pleased with the results of this independent diamond valuation, which reflect a statistically robust sample and rising rough diamond prices since the onset of the credit crises."

-Blonder Tongue Laboratories, Inc. (NYSE Amex: “BDR”)

Blonder Tongue (NYSE Amex: “BDR”) today announced its sales and results of operations for the second quarter and six months ended June 30, 2010. Net sales for the second quarter 2010 were $8,266,000, compared to $6,257,000 for the second quarter 2009. Earnings from continuing operations for the second quarter 2010 were $901,000 or $0.15 per share, compared to a loss of $(396,000) or $(0.06) per share for the comparable period of 2009.

PROLOR Biotech, Inc. (NYSE Amex: PBTH), a company developing next generation biobetter therapeutic proteins, today reported publication of a preclinical study in the current on-line edition of the journal Endocrinology showing that human growth hormone (hGH) linked to PROLOR's carboxyl terminal peptide (CTP) technology has significantly increased half-life and bioactivity compared to commercially available hGH. The publication, which is authored by PROLOR researchers, will also be included in the September print edition of Endocrinology.

PROLOR is developing hGH-CTP to provide growth hormone deficient adults and children with growth hormone therapy that requires only once-weekly or bi-monthly injections, rather than the multiple injections per week required by current hGH regimens.

Hess Corporation (NYSE: HES) and American Oil & Gas Inc. (NYSE-AMEX: AEZ) jointly announced today that Hess has agreed to acquire American Oil & Gas pursuant to a merger agreement approved by the Boards of Directors of both companies in an all-stock transaction. The acquisition will increase Hess’ strategic acreage position in the Bakken oil play in North Dakota by approximately 85,000 net acres.

Under terms of the agreement, Hess has agreed to issue 0.1373 shares of its common stock in exchange for each outstanding share of American Oil & Gas’ common stock. This represents a 9.4 percent premium to American Oil & Gas stockholders based on the closing stock prices of Hess’ and American Oil & Gas’ shares on July 27, 2010. It is expected that Hess would issue approximately 8.6 million shares for all outstanding American Oil & Gas shares and options on a net settlement basis.

NeoStem, Inc. (NYSE Amex: NBS) ("NeoStem" or the "Company"), an international biopharmaceutical company with operations in the U.S. and China, today announced that it has been awarded a $700,000 contract from the U.S. Army Medical Research and Materiel Command, Telemedicine and Advanced Technology Research Center (USAMRMC-TATRC) under U.S. Army Medical Research Acquisition Activity contract number: (W81XWH-10-2-0039). This contract is for the purpose of evaluating the use of topically applied bone marrow-derived adult mesenchymal stem cells (MSCs) for rapid wound healing. The Company previously announced that this funding was included in the Department of Defense FY09 Appropriations Bill and will begin receiving funds to initiate the program in 2010.

Santiago Pastor appointed Vice President, Operations for Ivanhoe Energy Ecuador

David Dyck, President and Chief Operating Officer of Ivanhoe Energy Inc. (TSX: IE, NASDAQ: IVAN), and David Martin, President and Chief Executive Officer of Ivanhoe Energy Latin America, announced today that the company's second well, IP-5b, located in the Pungarayacu field on Block 20 in Ecuador has successfully reached total depth and logging activities have commenced.

The company's operations in Ecuador are being led by Santiago Pastor, an important new addition to the Ivanhoe Energy Ecuador team. Mr. Pastor, newly appointed Vice President, Operations, joined the company from a senior position at Petrobras Ecuador.

Endeavour Silver Corp. (TSX: EDR)(NYSE Amex: EXK)(DBFrankfurt: EJD) announced today that it set a new record for quarterly silver and gold production in Q2, 2010 from the Company's two operating silver mines in Mexico, the Guanacevi Mine in Durango State and the Guanajuato Mine in Guanajuato State.

Silver production totalled 826,439 ounces (oz) and gold production amounted to 4,461 oz in Q2, 2010, up 41% and 61% respectively compared to Q2, 2009. As a result, silver-equivalent production rose to 1,116,404 oz in Q2, 2010, using gold as the only silver equivalent, at a 65:1 silver: gold ratio.