Actually, I can correct myself on this. The figures vary if one doesn't just work on profits, but on income after costs (Nevsun Quarterly p 3):http://www.nevsun.com/docs/financials/Q32012-NSU-FS.pdf
ITM iTech Minerals flags high-grade rockchip finds, boasting one sample at +18% copper. What lies underground remains to be seen
M4M Macro Metals picks up 80% in Firebird's manganese plays; mining services operations to launch if decision to mine passed
ARU Arafura updates on total US$1B funding as export banks and lenders take notice; heading toward FID for Nolans