Show o o How to Use Uso Sla Slag on Roads Blast furnace slag sIng for tor n a number of years J. past t has been used In the country country coun coun- tr try districts and manufacturing towns of ot England to for the tho construction of roads rands and as n a macadamizing agent If It properly selected It forms torms a ver very good foundation but ut should be placed at nn on Incline In In- In such a It manner as to hold each lump upon Its adjacent lump to Drev prevent r and ana then should be Covered over with Ith fine blast sing and properly rolled and consolidated after atter ward It Is also successfully used with tar and other bituminous materials for footway and sidewalk paving When once set concrete made from blast furnace slag Is very tenacious and It Is almost Impossible to break bieak It up with pick or bar |