<p>A natural gas well owned by Chevron exploded on February 11 in Dunkard Township, Greene County, in southwest Pennsylvania. At least one person was <a class="link" rel="nofollow" target="_blank" href="http://www.reuters.com/article/2014/02/11/usa-explosion-chevron-idUSL2N0LG1E220140211" target="_blank">reported</a> as injured, while another person was missing following the explosion. Chevron emergency teams were working to contain the fire, the company said in a statement. Credit: Thad Swestyn</p>
