FIRST AMENDMENT TO SECURED REDUCING REVOLVING CREDIT AGREEMENT DATED DECEMBER 17, 1997 BY AND AMONG MIDLAND RESOURCES, INC., MIDLAND RESOURCES OPERATING COMPANY, INC., SUMMIT PETROLEUM CORPORATION AND COMPASS BANK This First Amendment ("FIRST...Secured Reducing Revolving Credit Agreement • April 15th, 1998 • Midland Resources Inc /Tx/ • Crude petroleum & natural gas • Texas
