Late last week Ivanhoe Mines (TSX:IVN)(NYSE:IVN)(NASDAQ:IVN) and Rio Tinto received a letter from a representative of the Mongolian Cabinet inviting the companies to discuss potential changes to the Oyu Tolgoi Investment Agreement. The changes related to the conditions under which the Mongolian Government may negotiate with Ivanhoe Mines to acquire, on mutually agreed terms, an additional 16% interest in the project and the application of a sliding-scale royalty to the project. In response to this letter, Ivanhoe Mines and Rio Tinto have formally advised the Mongolian government that the companies are not prepared to renegotiate the investment agreement.

Tom Scholl, CEO of Keystone Industries, told CNBC that he could put more people to work but the U.S. federal government is standing in the way. Scholl said the states are working "pretty close" with the mining companies. It is the federal government that is holding up mining and not working fast enough on permitting. Scholl singled out the US Army Corp of Engineers as creating the slowdown. "We are the Saudi Arabia of coal in the United Stats. It is a great export commodity. And any time you export it it is going to create a lot of jobs."

The Renewable Energy Accountability Project has developed some hit and miss advocacy ads. The latest attempt at producing a viral video takes aim at coal. Renewable Energy Accountability Project is lobbying for greater use of renewable energy sources.

SBS World News Australia reports that Bouganville copper mine, one of the world's largest deposits of copper, could open if past combatants could be fairly compensated. The report also alleges new complicity in the conflict that cost the lives of around 15,000 to 20,000 people. The open pit mine was established in Papua New Guinea in the early 1970s by Bougainville Copper Limited, a subsidiary of Rio Tinto. While operating, it accounted for 20% of the country's national budget.

Canadian Zinc Corporation CA:CZN -14.75% (otcqb:CZICF) ("the Company" or "Canadian Zinc") is pleased to report positive results from its diamond drilling activities at the Company's 100% owned Prairie Creek Mine in the Northwest Territories.

Northern Dynasty's proposed Pebble Mine hears from local residents on Tuesday when the results of a referendum will be announced. Residents in southwest Alaska, the Lake and Peninsula Borough, are being asked to ban the granting of mine permits that could significantly impact salmon streams. While a successful referendum would be a set back to Pebble mine, the referendum results are not the last word. It is one of many decision points that the mine has to face. Regulatory bodies, the judiciary and other levels of government still have to weigh in.

Only four to six new producers might emerge outside of China to serve the demand for rare earth metals over the next five to ten years, according to analysts at a rare earth conference in China. The Metal-Pages(TM) Minor Metals and Rare Earth Conference was held in Beijing, China on September 13-17, 2011. The main reason cited for so few mines is the relatively small demand for rare earth metals outside of China. Most of the major electronic manufacturing resides within China.

Subsitution is driving rare earth demand down, according to analyst Dudley Kingsnorth speaking at an industry conference in China. Kingsnorth is executive director of Industrial Minerals Company of Australia. Dudley told the Metal-Pages(TM) Minor Metals and Rare Earth Conference in Beijing last September that he is dropping projected demand of rare earth oxide per annum to 170,000 tonnes from a previous forecast of 195,000. For example manufacturers of rechargeable batteries may start using lithium ion materials instead of a nickel-metal hydrid, which uses the light rare earth lanthanum.

Arch Coal (NYSE:ACI), one of the world's top five coal producers, declined 5.14% on Friday after lowering guidance. Arch Coal expects earnings to be $900 million to $1.0 billion range and adjusted earnings per diluted share to be in the range of $1.00 per share to $1.40 per share. "The reduction in earnings guidance resulted largely from lost metallurgical coal production at the Mountain Laurel complex," said the company in a statement.