Show Sulphur Stone Sandstone Is of little value value DI as as a building material as as It will not stand pressure In ex excess ess of some pounds per square Inch n Recent cent experiments experiments ex ex- experiments by the United St States tes board of standards Indicate a cheap method of making sandstone as strong as a granite The Tho stone Is cut then soaked I In melted l sulphur for fort several hours The sulphur permeates the structure and when cold blocks will withstand stand a pressure of pounds compres compres- sion slon Tests for tor weathering qualities are still In n progress but Initial results are reported i to be extremely favorable I Exchange |