Photos taken during surveys show that some of the chemical weapons canisters, such as those that carried mustard gas, appear to be leaking materials and are damaged.
http://usnews.nbcnews.com/_news/201...f-mexico-need-to-be-checked-experts-warn?lite
http://usnews.nbcnews.com/_news/201...f-mexico-need-to-be-checked-experts-warn?lite