Show Blast in Ill S ack Rocks l. l A. A Times LOS ANG ANGELES LES Feb 1 iDAn iD- iD An exp explosion oldon in a top roof-top construction construction construction con con- shack r rocked x ked the Los Friday Friday Friday Fri Fri- Angeles Times building early day and brought much of ot the downtown districts district's fire equipment to the structure for the second time in less less' than five hours A few hours earlier a flash blaze in the ventilating system filled the structure with smoke and midnight editions s went to press with workers misty-eyed misty and coughing Firemen said there was no apparent connection between between be be- tween the two outbreaks both attributed tentatively to to spontaneous spontaneous spon spon- combustion |