The 7.2 <span about="#mwt75" data-mw='{"parts":[{"template":{"target":{"wt":"M","href":"./Template:M"},"params":{"1":{"wt":"w"}},"i":0}}]}' id="mw3g" typeof="mw:Transclusion">M</span><sub about="#mwt75">w</sub><span about="#mwt75" typeof="mw:Entity"> </span><link about="#mwt75" href="./Category:Articles_using_Mw_magnitude_scale" id="mw3w" rel="mw:PageProp/Category"/> <a href="https://en.wikipedia.org/wiki/1929_Kopet_Dag_earthquake" id="mw4A" rel="mw:WikiLink" title="1929 Kopet Dag earthquake">Kopet Dag earthquake</a> shakes the Iran–Turkmenistan border region with a maximum <a class="mw-redirect" href="https://en.wikipedia.org/wiki/Mercalli_intensity_scale" id="mw4Q" rel="mw:WikiLink" title="Mercalli intensity scale">Mercalli intensity</a> of IX (<i id="mw4g">Violent</i>), killing up to 3,800 and injuring 1,121.