two factories
... that two factories in Copşa Mică, Romania, together made it one of the most polluted towns in Eastern Europe by the early 1990s?
... that <b id="mwCtw"><a class="mw-redirect" href="./Copşa_Mică_works" id="mwCt0" rel="mw:WikiLink" title="Copşa Mică works">two factories</a></b> <i id="mwCt4">(one pictured)</i> in <a class="mw-redirect" href="./Copşa_Mică" id="mwCt8" rel="mw:WikiLink" title="Copşa Mică">Copşa Mică</a>, Romania, together made it one of the most polluted towns in Eastern Europe by the early 1990s?