Show I 1 sulphur stone sandstone Is of little value na as a building ns na it will not stand pressure in excess of some pounds per square inch recent ex perl peri menta ments by the united states board of standards indicate indicate a cheap method of making inn king sa sandstone it as a strong as granite the stones beono la cut then soaked in melted sulphur for several hours houra the sulphur permeates the structure and when scold cold blocks will stand n pressure pressure of pounds compres olon alon tests for weathering qualities ore are still tn in progress but initial results rea illta tire reported to be extremely favorable f Exclia |