St. St Louis Solves Smoke Problems Worse Than S. S L. L Ls L's 5 Says Expert At its Us worst smote smoKe density in St. St Louis which claims near elimination of its smoke problem problem lem by municipal regulation used to average twice that of Salt Lake City's smokiest days Which would make it appear that St. St Louis was plenty smoky But that was Wa before the administration administration administration ad ad- ministration in the Missouri metropolis decided to take hold of the situation and do something something something some some- thing about it Now the average density on worst days in St. St Louis is only about half as bad as it was Inthe in inthe inthe the old days and moreover the periods of highest hIghet t density are much shorter than they used to be These were indications gleaned Friday from William 1 L. L Butler Butier Salt Lake City smoke abatement engineer who completed a study in St St. Louis ordered by the city commission Mr Butlers Butler's full findings are areto areto areto to be reported to the city commission commission com com- mission next week L St St. Louis' Louis new smoke abatement abatement abate abate- ment program has been in force since April 1910 1940 and results have attracted national attention attention attention atten atten- tion prompting the Salt Lake City commission to send Mr Butler Butler Butler But But- ler there Im LL 5 51 5 S 1 S br 5 S A. A 5 5 5 S 'S S m 4 jS' jS S S 'S SE E S S 'S SS S S 'S L S p 1 S S 'S S S 'S S S S 5 A S SS S'S S 'S S S 'S 41 4 SS 4 t S 4 S TELLS OF SMOKE ELIMINATION IN ST. ST LOUIS William L. L Butler Butier with his smoke de density indicator While not making any suggestions suggestions Friday Mr Butler discussed discussed discussed dis dis- dis- dis cussed some general aspects of the St St. Louis program and emphasized emphasized em em- that its workability has come mainly from cooperation of all aU parties partle notably newspapers newspapers newspapers pers which resulted in widespread widespread widespread wide wide- spread support rt The St St. Louis program is working he lie said It has not cleaned up the smoke problem entirely but it is progressing toward i it The program was two years in formation starting virtu virtually vir vir- tu lly from scratch A special smoke abatement committee took this stand Inthe Inthe in inthe the words of its chairman U No one procedure or no one Continued on Page Twelve Twel Column Three St. St Louis Defeats Smoke Problems Worse Than S. S Ls L.'s Says Expert Continued from Pat Page One On organization or group of ot Individuals individuals individuals alone can hope to accomplish accomplish accomplish a job like ours There is no one solution to the problem It involves many methods of attack attack attack at at- tack and the wholehearted support support support sup sup- port of everyone To explain density It is necessary necessary necessary sary to explain the called so-called chart standard mea mea- There are four charts No 1 I Indicating density ing 20 per cent of light No 2 40 per cent No 3 60 per cent No 4 80 per cent and No 5 per cent Estimates are made for intermediate percent percent- ages Two years ago Mr Butler said highest density in St St. Louis Lous was 24 or nearly 50 p per r cent obscured light enough to makIt make mak it necessary for motorists to use headlights in daytime Now he said the worst days' days density has been cut to an average average av nv- av- av of No 25 or about 30 per cent obscuring light More Important It was understood understood understood under under- stood these high density periods periods peri pert instead of lasting as much muchas as 24 hours a day have been reduced to two or three hours Involves Three Points The St St. Louis program written written written writ writ- ten Into law by municipal ordinance ordinance n nance nce adopted last April 8 Is Is' Is based on three major points 1 Potential smoke producing volatile fuels may be burned only in mechanical firing systems 2 Otherwise only smokeless fuels with prescribed maximum volatile contents may be burned 3 The city administration if It believes there is an emergency emergency emergency emer emer- gency may itself purchase and distribute smokeless fuel The city decided against operating a municipal smokeless fuel plant