Gary Mickelson http://kmuw.org en Ammonia Leak Sends Seven To Hospital http://kmuw.org/post/ammonia-leak-sends-seven-hospital <p>Seven people have been released from an Emporia hospital after an ammonia leak at the city's Tyson Foods plant.<br><br>Emergency workers were sent to the plant on Thursday.<br><br>KVOE News in Emporia reports that levels of ammonia at the site were registering at 10 parts per million, which is well below the lethal limit of 300 parts per million.<br><br>OSHA says workers can be exposed to a leak of 50 parts per million during an 8-hour shift.<br> Fri, 24 May 2013 11:20:18 +0000 Associated Press 17740 at http://kmuw.org