sentences:  ECC had also expanded into the ball clay market (used in the building industry) and, with over 250,000 tons a year, accounted for nearly half of British output.As with the clay division, the quarries division had grown through acquisition and produced a variety of stone, principally for the construction industry, and its operations extended well beyond its west country base into Leicestershire, Lancashire and the home counties.The building division comprised the firm of Selleck Nicholls Williams which had been acquired by ECC in 1945.