['cnet', 'In', 'October', '1984,', 'the', '98th', 'Congress', 'signed', 'into', 'law', 'the', 'Cigarette', 'Safety', 'Act', 'which,', 'among', 'other', 'things,', 'established', 'a', 'Technical', 'Study', 'Group', '(TSG)', 'comprising', 'representatives', 'of', 'the', 'tobacco', 'and', 'furniture', 'industries,', 'The', 'Fire', 'Service,', 'public', 'health', 'organiza-', 'tions', 'and', 'several', 'federal', 'agencies.', 'The', 'activities', 'of', 'the', 'TSG', 'included:', '",..,identification', 'of', 'the', 'different', 'physical', 'characteristics', 'of', 'cigarettes', 'and', 'little', 'cigars', 'which', 'have', 'an', 'impact', 'on', 'the', 'ignition', 'of', 'upholstered', 'furniture', 'and', 'mattresses..."', 'For', 'the', 'purposes', 'of', 'the', 'laboratory', 'study', 'the', 'tobacco', 'industry', 'prepared', 'for', 'TSG', 'a', 'set', 'of', 'experimental', 'test', 'cigarettes.', 'The', 'ciga-', 'rette', 'variables', 'that', 'were', 'studied', 'included:', 'cigarette', 'circumfe-', 'rence', '(21mm', 'and', '25mm', '-', 'most', 'commercial', 'US', 'cigarettes', 'have', 'circum-', 'ferences', 'in', 'the', 'neighborhood', 'of', '25mm),', 'tobacco', 'packing', 'density', '(100%', 'expanded', 'and', '100%', 'non-expanded', '-', 'most', 'commercial', 'cigarettes', 'use', 'about', '10-20%', 'expanded', 'tobacco),', 'tobacco', 'type', '(burley', 'and', 'flue-cured', '-', 'these', 'are', 'the', 'two', 'major', 'tobacco', 'types', 'used', 'in', 'us', 'cigarettes),', 'cigarette', 'paper', 'porosity', '(high', '~', '70', 'CORESTA', 'and', 'low', '-', '10', 'CORESTA', '-', 'most', 'US', 'cigarettes', 'have', 'paper', 'porosities', 'in', 'the', '20-40', 'range),', 'and', 'citrate', 'cigarette', 'paper', 'additive', '(', 'yes', 'and', 'no', '-', 'practically', 'all', 'US', 'cigarettes', 'use', 'citrates).', 'The', 'cigarettes', 'were', 'duly', 'tested', 'by', 'NBS', 'on', 'upholstered', 'furniture', 'mock-ups', 'using', 'some', 'specially', 'selected', 'fabric/padding', 'combinations', 'that', 'had', 'igni-', 'tion', 'propensities', 'in', 'the', 'border-region', 'where', 'cigarette', 'characte-', 'xistics', 'could', 'have', 'an', 'effect', 'on', 'the', "system's", 'ignition', 'behavior.', 'TSG’s', 'data', 'are', 'summarized', 'in', 'Table', '1.', 'From', 'these', 'data', 'TSG', 'concluded', 'that:', 'PLZEO6LS']