The <a href="https://en.wikipedia.org/wiki/Courrières_mine_disaster" id="mwpQ" rel="mw:WikiLink" title="Courrières mine disaster">Courrières mine disaster</a>, Europe's worst ever, kills 1099 miners in northern France.<sup about="#mwt110" class="mw-ref reference" data-mw='{"name":"ref","attrs":{},"body":{"id":"mw-reference-text-cite_note-20"}}' id="cite_ref-20" rel="dc:references" typeof="mw:Extension/ref"><a href="./March_10#cite_note-20" id="mwpg" style="counter-reset: mw-Ref 20;"><span class="mw-reflink-text" id="mwpw">[20]</span></a></sup>
<span class="mw-reference-text" id="mw-reference-text-cite_note-20"><cite about="#mwt107" class="citation web cs1" id="mwB_w"><a class="external text" href="https://www.britannica.com/event/Courrieres-mining-disaster" id="mwB_0" rel="mw:ExtLink nofollow">"Courrières mining disaster | explosion and fire, Pas-de-Calais, France <span id="mwB_4" typeof="mw:Entity">[</span>1906<span id="mwB_8" typeof="mw:Entity">]</span>"</a>. <i id="mwCAA">Encyclopedia Britannica</i><span class="reference-accessdate" id="mwCAE">. Retrieved <span class="nowrap" id="mwCAI">29 June</span> 2020</span>.</cite><span about="#mwt107" class="Z3988" id="mwCAM" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&amp;rft.genre=unknown&amp;rft.jtitle=Encyclopedia+Britannica&amp;rft.atitle=Courri%C3%A8res+mining+disaster+%7C+explosion+and+fire%2C+Pas-de-Calais%2C+France+%5B1906%5D&amp;rft_id=https%3A%2F%2Fwww.britannica.com%2Fevent%2FCourrieres-mining-disaster&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3AMarch+10"></span></span>