Zarzaitine
... that in 1961, Zarzaitine was considered to be the largest oil field of the eastern Sahara, with primary reserves of 80 million tons?
... that in 1961, <b id="mwBS0"><a href="./Zarzaitine" id="mwBS4" rel="mw:WikiLink" title="Zarzaitine">Zarzaitine</a></b> was considered to be the largest oil field of the <a class="mw-redirect" href="./Sahara_Desert_(ecoregion)" id="mwBS8" rel="mw:WikiLink" title="Sahara Desert (ecoregion)">eastern Sahara</a>, with primary reserves of <span about="#mwt25" class="nowrap" data-mw='{"parts":[{"template":{"target":{"wt":"nowrap","href":"./Template:Nowrap"},"params":{"1":{"wt":"80 million"}},"i":0}}]}' id="mwBTA" typeof="mw:Transclusion">80 million</span> tons?