Resources companies are pulling down the FTSE 100 index. Oil giant BP continues to slide on the back of the Gulf of Mexico oil spill. Shrimpers in Louisiana and Alabama are suing for economic loss.BHP Billiton and Rio Tinto are lower ahead of the release over the weekend of the Australian government's review of tax rates for mining companies. There are worries that tax rates may be raised. Shares in Intercontinental Hotel Group have risen on the back of news that it is spending $1bn on marketing for the relaunch of Holiday Inn. FTSE 100 - RisersInterContinental Hotels Group (IHG) 1,156.00p +1.76%Randgold Resources (RRS) 5,510.00p +1.66%Kingfisher (KGF) 249.90p +1.50%Rexam (REX) 323.20p +1.25%Sage Group (SGE) 245.90p +1.03%WPP Group (WPP) 698.00p +0.94%Royal Dutch Shell 'B' (RDSB) 1,978.00p +0.87%BG Group (BG.) 1,113.00p +0.86%Intertek Group (ITRK) 1,498.00p +0.81%BT Group (BT.A) 127.40p +0.79%FTSE 100 - FallersBarclays (BARC) 341.65p -5.43%Xstrata (XTA) 1,072.00p -5.38%Rio Tinto (RIO) 3,350.00p -5.18%BP (BP.) 560.20p -4.11%Vedanta Resources (VED) 2,517.00p -4.11%BHP Billiton (BLT) 2,010.00p -3.80%BAE Systems (BA.) 342.10p -3.39%Eurasian Natural Resources (ENRC) 1,214.00p -3.34%Tullow Oil (TLW) 1,144.00p -3.21%Antofagasta (ANTO) 993.00p -3.12%