Show II SHALE DEVELOPMENT AWAITS PRICE RISE CHICAGO May Mav 27 The The oil shale Industry in t the tre e United States cannot canna compete with l petroleum until the price of ot the latter goes considerably above present levels Martin J J Gavin m oil shale technologist of the United States bureau of mines told the International Railway Fue I Development work should continue with some plan for coordination of ot the work of many Inventors he said in preparation for the day when oil extracted extracted extracted ex ex- from the shale rock of Utah Colorado and other states can be marI marketed marKeted mar- mar in competition with Ith the ground I lolls oils |