Show of cement mr giron read before the En engineers ginters club at philadelphia at paper on oil the trade of the world iu in portland cement in ill the course of which lie he baid that the present annual production in ill europe amounts to over barrels birr els and its commercial value to over 1 the first factory was established at North neet ou on the thames the process was so crude I 1 that in ill I 1 KO IMO only tour four factories were in operation in england eng haild there is now over barrels made each year the process is much the same as it was twenty years ago the raw materials mater fals are chalk and clay both pure and although interior inferior processes tea are employed tiley they make a satisfactory cement A tow few years ago the entire product of the kilus was put on the market but the fineness of the continental cements led english Enli bli makers to improve their processes although even now english cement is not as a rule as aa firm as B gene geneva va or F rench french portland new york even laz in 8 I 1 |