Harry Winston Diamond shares fell 11 cents on Friday despite a successful Q3 production report. The company (TSX:HW, NYSE:HWD) said it processed 3% more ore at its 40%-owned Diavik Diamond Mine in the Canadian north, producing 1.9 million carats from 0.6 million tonnes of ore. That translates to an 8% increase in recovered carats from the same period in 2010 due to higher processed ore grades, says Harry Winston.

Bloomberg reports that three environmental groups have filed a lawsuit seeking to halt the proposed Highland Reylas mountaintop removal mine in Logan County, West Virginia. The West Virginia Highlands Conservancy, the Ohio Valley Environmental Coalition and the Sierra Club filed the lawsuit Thursday in U.S. District Court in Huntington challenging a permit issued by the U.S. Army Corps of Engineers. The groups claim the corps failed to consider scientific studies that say mountaintop removal mines pose health threats to residents.

Despite bans on export of iron ore from India, the price of the steelmaking ingredient has fallen in China. Business Standard reports that the price of iron ore originating from India has dropped 12% in Chinese markets to $168 a tonne, compared to $191 a tonne two weeks ago. The website quotes the chairman of Maya Iron Ores, a commodities brokerage, saying that Chinese steelmakers and traders expect the market to drop even further due to global financial turmoil and reduced demand:

Centaurus Metals (ASX:CTM) slipped back to 72 cents after rising to 78 cents Thursday, on news of a positive resource estimate from its flagship Jambreiro iron ore project in Brazil. Perth-based Centaurus reported a 65% jump in iron ore from Jambreiro, to 117.5 million tonnes grading 26.8% Fe.

Copper miners in Zambia are joining their counterparts in Indonesia in demanding a rise in pay. The Wall Street Journal reports hundreds of miners at Chinese company Sino Metals downed tools Friday over wage demands.

Talvivarra Mining (LON:TALV) got massacred on the markets today on news that its CEO, Pekka Perä, has resigned. The London-listed Finnish base metal miner shed 55.83 pence to close at 198.66p — a 21.67% drop. It is clear that investors saw the departure of Perä — the driving force behind the company and its largest shareholder, owning 23% of the stock — as a major negative, says an analyst quoted in The Daily Telegraph:

As the US State Department holds its final public hearing today on the controversial Keystone XL pipeline, one observer notes that the debate between the pipeline's supporters and detractors is being framed in more ideological terms than in a manner that actually weighs the pros and cons of the project:

A new report from research firm TNS could have implications for mining. A survey of affluent households around the world — defined as greater than $100,000 — found that 80% of the world's wealthy live in Western countries.TNS's Global Affluenty Investor study conducted interviews across 24 markets including China, Brazil and India.

The US coal industry scored a victory in court Thursday after a federal judge ruled that the Obama administration did not have authority to tighten oversight of permits used by coal mining companies that do "mountaintop mining." The ruling by the U.S. District Court says the Environmental Protection Agency (EPA) "exceeded its authority under the Clean Water Act when it issued tougher environmental guidelines related to fill material dumped into streams after the tops of mountains are blasted off to extract underlying coal seams," reported The Wall Street Journal. The National Mining Association sued the EPA last year over the issue.

Shares of Ivanhoe Mines (TSE:IVN) and Rio Tinto (ASX:RIO) both gained today on news that Mongolia has backtracked on a demand for a greater share of the massive Oyu Tolgoi copper-gold complex. Rio was up 4.94% on the ASX while Vancouver-based Ivanhoe jumped 13.06% on the Toronto exchange. The two companies and the government of Mongolia issued a joint release yesterday saying that all parties have "reaffirmed their continued support" for the 2009 Oyu Tolgoi Investment Agreement.

Brazil is offering a carrot to encourage domestic production of fertilizer while at the same time, reaching a little deeper into the pockets of iron ore miners. A Mining Ministry official from the South American powerhouse said Thursday that Brazil plans to boost taxes on iron ore while cutting the levy on fertilizers as part of a plan to overhaul mining regulations, Bloomberg reported: The government is studying a plan to double the royalty on iron ore to 4 percent of gross revenue from 2 percent of net sales now, Claudio Scliar, the ministry’s secretary for geology and mining, said today in an interview. The levy on fertilizers may be reduced from 3 percent to prompt producers to increase domestic output of the crop nutrients, he said, declining to specify the size of the cut.

Reuters reports that Albania is inviting bids for 151 mining licences this year, with 20 of them to be allocated through weekly competitions.