Show Study of Weather Effect On Stone May Take Century WASHINGTON Federal Federal government government gov gov- workers have gone to work on an experiment which may go on for as long as years They want to find out oui how various stones will weather the capitals capital's climate To determine that they have assembled 2000 rocks s from 47 states and 16 18 foreign countries and built them Into a masonry wall 13 feet high 38 feet long and 2 feet thick The big rock heap is In a field at the national bureau of standards standards stand stand- ards which tests all sorts of things for the government |