Pemberton Mill
... that the sudden collapse of the Pemberton Mill was one of the worst industrial accidents in American history?
... that the sudden collapse of the <b id="mwDS8"><a href="./Pemberton_Mill" id="mwDTA" rel="mw:WikiLink" title="Pemberton Mill">Pemberton Mill</a></b> was one of the worst <a class="mw-redirect" href="./Industrial_accident" id="mwDTE" rel="mw:WikiLink" title="Industrial accident">industrial accidents</a> in <a class="mw-redirect" href="./American_history" id="mwDTI" rel="mw:WikiLink" title="American history">American history</a>?