THIS SECOND SUPPLEMENTAL INDENTURE, effective as of May 7, 1999, among Safety- Kleen Services, Inc. (formerly LES, Inc.), a Delaware corporation (the "Company"), Safety-Kleen Corp. (formerly Laidlaw Environmental Services, Inc.), a Delaware...Second Supplemental Indenture • October 29th, 1999 • Safety Kleen Corp/ • Hazardous waste management • New York
