Arson Increasing Rapidly; Recession Called a Factor
NY Times survey on increase in number of arson cases; says arson is recession-inspired and expected to increase by 20% in '75; notes multimillion-dollar arson-for-profit racket involving home repairs and ins fraud uncovered, where 222 fires were set with Molotov cocktails; recession-inspired fires seen as tactic of desperate businessmen to 'insure and burn' as means to fight recession; other fires classified as juvenile arson, revenge, pyromaniacs and fraud fires; Internal Assn of Arson Investigators say arson has increased by 146% and that figure underestimates scope of problem because arson often goes unrecognized; Robert May, exec sec of Internatl Assn of Arson Investigators, maintains people are killed in deliberately set fires and arsonists attack suburbs and outlying town, where volunteer fire depts and/police are less equipped to deal with problem; Robert Provencher, chief arson investigator for Gen Adjustment Bur, says 80% of bur's work involves arson, and many cases involve insolvent businesses, arson cases in NY and III noted (L)