Show Insurance Chicago 13 Sixteen of the mutual mut-ual fire insurance companies of the United State in session here today resolved to decline any risks on imperfectly protected mills and factories and to allow those furnished fur-nished with automatic sprinklers and a reliaole water supply a reduction reduc-tion of 25 per cent from premium rates The companies also approved the suggestion that a chain lead from the safety valve of a boiler to the exterior of a building so that incase in-case of fire the engineroom can be flooded with live steam and the danger dan-ger of explosion averted I I |