Petroleum/ Oil/ Chemicals

  1. BP Pipeline
  2. Chesapeake
  3. Tronox
  4. Exxon Mobile
  5. Conoco Phillips
  6. Amoco
  7. Williams Company
  8. Sinclair Refining
  9. Syntroleum
  10. Citgo
  11. Red Fork Energy
  12. Niska Gas Storage