PCB 80-144

		PCB 80-144 08/21/80 Order ILLINOIS NITROGEN CORPORATION v. ENVIRONMENTAL PROTECTION AGENCY
		PCB 80-144 10/02/80 Order ILLINOIS NITROGEN CORPORATION v. ENVIRONMENTAL PROTECTION AGENCY
		PCB 80-144 10/30/80 Order ILLINOIS NITROGEN CORPORATION v. ENVIRONMENTAL PROTECTION AGENCY
		PCB 80-144 12/03/81 Opinion and Order ILLINOIS NITROGEN CORPORATION v. ENVIRONMENTAL PROTECTION AGENCY