| Show A PAVEMENT A USE FOUND foll ABUNDANT SLAG A new industry has been started in eng the object of chica is to utilize blast furnace slag in a somewhat home what more definite and systematic manner than has hitherto been attempted the works where it is earned on belong to a limited company the director of which is mr 3 A jones one of the objects of the company is to make paving sets these are produced by pouring blast furnace slag into metallic moulds and then allowing the castings to cool slowly in an annealing furnace without annealing biag cast in whatever form is certain to fly to pieces by the unequal contraction which takes place as it cools with annealing it can be cast into almost any lorm and when is as hard and tough as ja basaltic rock inasmuch as these sets are as serviceable as those which are hewn from and much more shapely the manufacture and sale of them is of itself a good thing for cleveland and for all purchasing districts but there are further manufactures it has been found that if slag which nas been annealed be pulverized and mixed with cement la certain proportions and pressed into moulds and put aside for say three it sets into a peculiarly firm bard and solid mass the value of these I 1 bics tics was soon perceived especially as applied to the manufacture of concrete flagstones flag stones consequently the company referred to is making these and laying them down tor footpaths foot paths railway station platforms and so forth the standard size of flagstone is about 3 feet by 2 feet by 3 laches they are exceedingly flat and smooth and usually hard on the surface when laid down in place they form a beautiful even surface far superior to what is ever obtained with the biest caithness fliam town surveyors always prefer pavements laid with flags to those made by concreting in place for in the former case one or more flags can be taken up and laid down agada should there be any settlement of the foundation below or should it be necessary to get at any pipes or drains bat if an concrete payment is interfered with or any settlement takes place below i can never again be put into as satisfactory condition as at first inasmuch as middlesbrough Middles brough is a seaport town and flagstones flag stones and paving sets are articles required everywhere it is to be hoped that they will henceforth be exported coastwise and abroad in this way something tangible might be done at once to find employment for the idle to tide over the long continued depression of trade and at the same time to prevent a further accumulation of slag in the vi coulty |
