Chandos Glass Cone
... that the Chandos Glass Cone was used for pottery and brick manufacture for much longer than it was for glassmaking?
... that the <b id="mwARs"><a href="./Chandos_Glass_Cone" id="mwARw" rel="mw:WikiLink" title="Chandos Glass Cone">Chandos Glass Cone</a></b> was used for pottery and brick manufacture for much longer than it was for <a class="mw-redirect" href="./Glassmaking" id="mwAR0" rel="mw:WikiLink" title="Glassmaking">glassmaking</a>?