Exhibit 4.6 CLARK USA, INC. 10 7/8% SERIES B SENIOR NOTES DUE 2005 SUPPLEMENTAL INDENTURE Dated as of August 10, 1998Supplemental Indenture • March 31st, 1999 • Clark Usa Inc /De/ • Petroleum refining • New York
Contract Type FiledMarch 31st, 1999 Company Industry Jurisdiction