Tenaris S.A. (NYSE: TS) (BAE: TS) (MXSE: TS) (MILAN: TEN) announced today that, within the framework of the Venezuelan National Assembly's law declaring all of Matesi's assets to be of public and social interest and ordering the Executive Branch to take the necessary measures for the expropriation of such assets, President Chavez issued Decree 8280/2011, which orders the expropriation of Matesi's assets as may be required for the implementation of a state-owned project for the production, sale and distribution of briquettes, and further instructs to commence negotiations and take any actions required for the acquisition of such assets.

Sulliden Gold Corporation Ltd. ("Sulliden", or the "Company") (TSX:SUE)(OTCQX:SDDDF) is pleased to announce continued positive exploration results for six new drill holes from the ongoing 70,000 metre drilling program being carried out this year on its 100%-owned Shahuindo Gold and Silver Project in northern Peru

Colibri Resource Corporation reports final results from a 2400 meter drill program at the Ramard silver project, in Sonora, Mexico. The Ramard property consists of over 4000 hectares of mineral concessions located 100 km north of the city of Hermosillo, Sonora, wholly owned by Colibri's Mexican subsidiary, Minera Halcones. The Ramard property contains numerous historical artisanal silver mine workings.

The head of Denison Mines (DML.TO: Quote) said on Tuesday he is frustrated by the U.S. government's move to extend a ban on mining on 1 million acres of federal lands near the Grand Canyon, though the impact of the ban on his company remains unclear. In an interview with Reuters, Chief Executive Ron Hochstein said that while three of its Arizona Strip projects are unaffected, Denison is still looking into whether the six-month extension announced on Monday will have an impact on the development of its EZ Complex uranium deposits in Arizona.

China's global share of rare earth output will drop steeply in the next two years as other countries ramp up production to compensate for domestic curbs on mining the minerals, a former government official and future rare earth group chief said. The country's rare earth output would drop from 95 percent of global output to 60 percent, reversing global reliance on China, Wang Caifeng, a former Ministry of Industry and Information Technology (MIIT) official told the official China Daily.

Rep. Ron Paul, R-Texas, may be yet again running for President, but he has not abandoned his quest for an independent audit of U.S. gold reserves. A hearing is scheduled this Thursday before Paul's House Subcommittee on Domestic Monetary Policy and Technology on Paul's bill demanding an audit of all gold in the United States.

Ringbolt Ventures Ltd. (TSX VENTURE:RBV)(OTCQX:RNGTF)(FRANKFURT:3OZ) has commenced drilling on its Lisbon Valley Potash Project in Utah. The planned drilling program is to test the potash and salt horizons on one of its state leases. The state lease is located on section 36, township 29.5 south and range 25 east. The drill plan is to use reverse circulation drilling to the top of salt bed 5 at an approximate depth of 2,800 feet where there is a reported historical assay of 18.5% K2O and then core drill the potash bed. Cane Creek Mine’s Solar Evaporation Ponds. Image by Ringbolt Ventures Ltd.

Environmental groups in Quebec are calling for an end to asbestos mining, the Montreal Gazette is reporting: Nature Québec, the Société pour Vaincre la Pollution, and Pour que le Quebec ait meilleure mine say asbestos should not be mined because is too dangerous for human health. Asbestos is banned in over 50 countries and is strictly controlled in Canada. Hundreds of workers exposed to asbestos have been diagnosed with lung disease, with many dying an early and painful death. One asbestos victim, Canadian Conservative MP Chuck Strahl, has called on the government to stop exporting asbestos, which is still used in building materials.

Environment Canada has been criticized for excluding statistics indicating a substantial rise in overall pollution from the oilsands sector from 2008 to 2009 in its inventory report, while including numbers suggesting the industry was making progress