Cover title: Staff reports to the President's Commission on the Accident at Three Mile Island. Oct. 1979. S/N 052-003-00728-2 (v. 1) S/N 052-003-00729-1 (v. 2) S/N 052-003-00730-4 (v. 3) S/N 052-003-00731-2 (v. 4) Item 851-J Includes bibliographical references.; v. 1. Technical staff analysis reports summary; Summary sequence of events -- v. 2. Chemistry; Thermal hydraulics; Core damage; WASH 1400-reactor safety study; Alternative event sequences -- v. 3. Selection, training, qualification, and licensing of Three Mile Island reactor operating personnel Technical assessment of operating, abnormal, and emergency procedures; Control room design and performance -- v. 4. Quality assurance; Condensate polishing system; Closed emergency feedwater valves; Pilot-operated relief valve design and performance; Containment: transport of radioactivity from the TMI-2 core to the environs; Iodine filter performance; Recovery: TMI-2 cleanup and decontamination.