EXHIBIT 4.1 ---------- TENTH SUPPLEMENTAL INDENTURE TENTH SUPPLEMENTAL INDENTURE (this "Supplemental Indenture"), dated as of December 21, 2004 is by and among Chesapeake Energy Corporation, an Oklahoma corporation (the "Company"), the Subsidiary...Supplemental Indenture • December 22nd, 2004 • Chesapeake Energy Corp • Crude petroleum & natural gas • New York
