A <a href="https://en.wikipedia.org/wiki/Solar_particle_event" id="mwAWM" rel="mw:WikiLink" title="Solar particle event">solar particle event</a> affects computers at the <a href="https://en.wikipedia.org/wiki/Toronto_Stock_Exchange" id="mwAWQ" rel="mw:WikiLink" title="Toronto Stock Exchange">Toronto Stock Exchange</a>, forcing a halt to trading.<sup about="#mwt56" class="mw-ref reference" data-mw='{"name":"ref","attrs":{},"body":{"id":"mw-reference-text-cite_note-9"}}' id="cite_ref-9" rel="dc:references" typeof="mw:Extension/ref"><a href="./August_16#cite_note-9" id="mwAWU" style="counter-reset: mw-Ref 9;"><span class="mw-reflink-text" id="mwAWY">[9]</span></a></sup>
<span class="mw-reference-text" id="mw-reference-text-cite_note-9"><cite about="#mwt53" class="citation web cs1" id="CITEREFDayton1989">Dayton, Leigh (1989-09-09). <a class="external text" href="https://www.newscientist.com//article/mg12316812.400-solar-storms-halt-stock-market-as-computers-crash" id="mwB30" rel="mw:ExtLink nofollow">"Solar storms halt stock market as computers crash"</a>. <i id="mwB34">New Scientist</i><span class="reference-accessdate" id="mwB38">. Retrieved <span class="nowrap" id="mwB4A">2018-08-01</span></span>.</cite><span about="#mwt53" class="Z3988" id="mwB4E" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&amp;rft.genre=unknown&amp;rft.jtitle=New+Scientist&amp;rft.atitle=Solar+storms+halt+stock+market+as+computers+crash&amp;rft.date=1989-09-09&amp;rft.aulast=Dayton&amp;rft.aufirst=Leigh&amp;rft_id=https%3A%2F%2Fwww.newscientist.com%2F%2Farticle%2Fmg12316812.400-solar-storms-halt-stock-market-as-computers-crash&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3AAugust+16"></span></span>