Correction: August 29 Lower Zakum, Umm Shaif assessments

Please note that the following corrections have been issued for Lower Zakum and Umm Shaif crude assessments on August 29, 2011.

These assessments appear in Platts Crude Oil Marketwire, Platts Global Alert page 440 and in Platts price database.

Assessment Code Lower Zakum 109.93-109.97 (AAKNN00) Lower Zakum diff -0.35/-0.25 (AAKUF00) Umm Shaif 109.43-109.47 (AAOUO00) Umm Shaif diff -0.35/-0.25 (AAOUP00)