CEMENT & LIME VOL. XLI. No. 6 U.K. Repres .. nt .. MANUFACTURE NOVEMBER , J968 Price Is. 6d . per COPy, An nual subsc ripti om : Inland 9s. pos t free. O ve rseas li s. 6d . including pos tage . Canada and U.S.A . 1.80 dollars ioel. post. CONTINENTAL ENGINEERING CO. L TO., 2t Montagu Street, Portman London, W.1.