Exhibit 4.1 SECOND WAIVER AND AMENDMENT AGREEMENT This Second Waiver and Amendment Agreement (the 'Second Waiver Agreement') dated as of April 15, 2002 is made and entered into by and among Wachovia Bank, National Association, formerly known as First...Second Waiver and Amendment Agreement • April 24th, 2002 • Selas Corp of America • Industrial process furnaces & ovens • Pennsylvania
