Sorry Desmond,
Made a mistake, "1.8-2% Nickel Ore is selling at USD$50-60/t in China Market."
should be RMB 550/t = USD $86.2 /t for 1.8-1.9% nickel laterite as at 31, 05 2012.
http://www.smm.cn/price.php?keyid=25 (in chinese, google translate?)
So if 70t ore used to produce 1t Nickel metal, ENK save
cost of 70t*$86=$6020 than the DSO buyers.