POWER CUT OFF FOR 500,000 IN MANHATTAN; FAILURE IN HEAT HITS TRAVEL, HOSPITALS;; CABLES BURN OUT Lights and Appliances Slowly Restored -- 6 Breaks Found Power Fails in Large Upper Manhattan Areas as Overtaxed Circuits Burn Out ELECTRIC SERVICE RESTORED SLOWLY Cooling Devices Viewed as Cause of Breakdown -Hospitals, Travel Hit
Power failure halts all st and signal lights on E Side, 74th-110th Sts, and on W Side, 59th-110th Sts; extra ptl keep traffic moving smoothly; some snarls develop at rush hr