Sellers mining the moment

Sellers moved in on mining and energy stocks, sending the benchmark index down after another week of solid gains.
The S&P/ASX 200 ended 26.8 points lower at 5250.1. This put it 51.7 points below Wednesday's intraday high but still meant a gain of 74.4 points for the week.
Shaw Stockbroking head dealer Jamie Spiteri said an overnight fall in commodity prices sparked the sell-off in the miners but other sectors held their ground.
"The market was weaker but the index has actually held up quite well when you consider the nature of some of the falls across some of the bigger miners," he said.
The two market-leading mining giants came in for heavy selling. BHP Billiton tumbled 90¢, or 2.9 per cent, to $30.10 and Rio Tinto dropped $2.80, or 3.4 per cent, to $80.80.
Energy stocks were also lower after a dip in the oil price in New York, with Woodside Petroleum dropping 90¢ to $47.90 and Santos losing 1¢ to $12.26.
Among the big banks, Westpac firmed 14¢ to $24.65 and ANZ rose 17¢ to $27.55 but National Australia Bank dropped 13¢ to $37.20 and Commonwealth fell 11¢ to $46.47.
AXA Asia Pacific was down 4¢ at $6.21 after the financial services company unveiled a mixed performance in its fund flows for the first quarter.
News Corp's non-voting stock slid 9¢ to $22.52 as the voting scrip fell 12¢ to $23.93. Publishing and Broadcasting Ltd put on 49¢ to $18.50 and West Australian Newspapers rose 10¢ to $7.90 but Fairfax was down 1¢ at $3.90.
Telstra closed up 4¢ at $3.79 after seven other telcos proposed helping it with the roll-out of a $3 billion fibre network to provide high-speed internet access. Of the listed telcos involved in the proposal, Macquarie Telecom dipped 1¢ to 79¢, PowerTel was unchanged on $1.16 and Optus owner SingTel rose 3¢ to $2.31.
Shares in Air New Zealand firmed 2¢ to $1.05 after it announced it would lift domestic and international air fares by 10 per cent in response to rising jet fuel prices.
The big retailers recovered some of Thursday's losses, with Woolworths rising 9¢ to $18.69 and supermarket rival Coles Myer advancing 6¢ to $10.72.
A tumble in the bullion price sent gold stocks lower. Newcrest dropped 75¢ to $22.26, Newmont slid 32¢ to $7.46 and Lihir eased 2¢ to $3.10. At the close of Sydney trade, the spot gold price was down $US27.88 an ounce at $US612.87.
Minara Resources fell 8¢ to $2.64 after the nickel miner cut its production target for the year.
The dollar fell heavily as failing gold and silver prices undid some of its recent rally. At 5pm, the Aussie was buying US73.81¢, more than half a US cent below Thursday's close of US74.43¢ but still well up from US73.03¢ at the end of last week's trading.