Frik Els , Editor

Workers at Freeport's Grasberg – one of the world's largest gold and copper mines – in the remote Indonesian province of West Papua vowed Friday to paralyse production, as their strike over pay enters its second month. About 12,000 of Freeport's 23,000 Indonesian workers have joined the strike that started on Sept. 15 and on Friday Freeport said some workers have returned, putting it in a position to increase mining and milling output. The gulf between the the two parties are so wide that chances of a settlement appear remote – Freeport has offered a 25% increase on wages while the union wants the current minimum rate of $1.50 an hour raised more than 8-fold.

IDEX Online News reports the rough diamond market is in a rut and demand for rough is so limited, that traders are not buying goods, even if offered at 12 or even 13 percent below what DTC's roughly 80 selected clients – called Sightholders – paid for at last week's Sight. Traders cannot move it, and manufacturers claim that with the current decline in polished prices they will lose money. IDEX says from a low cost supplier, DTC – the rough diamond sales and distribution arm of De Beers – has ascended to the pricier side of the list, alongside Russia's Alrosa. Many lots also went unsold at BHP Billiton's latest tender and Diamdel's auction, with bids falling short of the reserve prices.

Reuters reports copper rose to its highest in nearly a week on Thursday to close at $7,225/tonne on the LME up from Wednesday's close of $6,820 as US data hinted at an improvement in the labour market and European policymakers' comments on dealing with Greece's debt crisis calmed nerves. Copper's strong gains comes at a time when some 5,000 merchants are gathering in the British capital for London Metal Exchange week, an annual event during which supply contracts are discussed. On Monday the red metal fell to 14-month low.

AFP reports a blue-and-white Ming vase fetched nearly $22 million in Hong Kong on Wednesday, setting a new record at auction for porcelain from the 15th century Chinese dynasty. The vase went for more than double the lower pre-sale estimate, but at Sotheby's jewels and jadeite auction held at the same time the 9.27-carat Golconda Pink diamond with an estimate of $13 million – $19 million went unsold. Hong Kong is now the world's third-largest auction centre after New York and London, thanks to China's rapidly growing number of millionaires.

Shares in London-listed Antofagasta, the copper giant controlled by Chile’s Luksic family, jumped 7% in afternoon trade on the FTSE, one of the best performers on a good day for miners. CEO Marcelo Awad earlier told Dow Jones Newswires the slump in copper prices in the last few weeks is a market overreaction and it hadn't seen any of its customers cancel or delay shipments. Copper has slumped over 30% since peaking at an all-time high of $10,190/tonne in February and Awad added that European customers of Antofagasta – after Thursday's move upward worth £10 billion again – are nevertheless reluctant to commit to 2012 orders thanks to all the uncertainty in the eurozone. The Luksics could do with a bit of a boost: analysts say Chile's richest family may have lost their way after buying control of Latin America’s largest container shipping company last month.

Reuters reports Zambia has lifted a ban on metal exports just two days after imposing it to sort out revenue collection and increase transparency in Africa's top copper producer, a minerals ministry official said on Thursday. It's good news for the Zambian mining sector – a lengthy suspension could have further pressured mines already dealing with volatile metal prices in recent weeks. Newly elected President Michael Sata has been concerned – analysts say with good reason – about copper exporters misreporting the amount of ore leaving Zambia, and earlier this week suspended export permits, to put new guidelines in place. Cobalt, gold and nickel also fell under the ban and now all export payments need to be routed via the central bank.

Despite worldwide efforts to reduce the consumption of rare earth elements, researcher IMARC Group expects strategies like substitution and recycling to have a little effect on demand for erbium, dysprosium, terbium, neodymium and europium in the short term.

Even if both Keystone XL and Enbridge's Northern Gateway pipelines are built, bitumen is expensive to extract and cannot compete with the many new shale oil plays – particularly in the Bakken oil basin where studies put the recoverable oil at 24 billion barrels – which have pushed US production to its highest level in a decade. No wonder Enbridge – busy building out its capacity in Bakken while Northern Gateway wallows in the approval process – said "it's the wild west out there at the moment."

The Keystone XL pipeline project of TransCanada Corp. should be halted because the US did not complete an environmental impact review before work started, green advocacy groups said in a lawsuit filed on Wednesday. The Center for Biological Diversity, Friends of the Earth and Western Nebraska Resources Council alleges the public process was a "sham" and that TransCanada has already started construction in the lawsuit filed in Omaha, Nebraska federal court. Governors of five of the six states the pipeline crosses have backed the project, except for the Nebraska. TransCanada has strongly denied the claims – all it did in Nebraska was "mow some grass."

Gold and gold receivables held by euro zone central banks rose by €56.8 billion to €420 billion after a quarterly revaluation, the European Central Bank said on Wednesday. Net foreign exchange reserves in the Eurosystem of central banks rose by €13.2 billion to €191.1 billion after the revaluation, the ECB said in a weekly consolidated financial statement. The combined balance sheet of the ECB and the 17 national euro zone central banks grew by €80.8 billion to €2.289 trillion, the statement showed. The euro fell against the dollar on Wednesday as worries about a Greek default persist and one day after the first European bank had to be bailed out.