Originally Posted by Dartgod
So I see you already addressed this while I was writing my post.
You are cautioning others to not jump to conclusions about what happened, while you are still calling it an explosion, even though that particular word is never mentioned in the article.
A chemical reaction caused (as a biased source puts it) a cap to pop off. It was enough of a reaction that, even though it was done outside, it got the attention of someone. If you've got a better term than "explosion", I'm open to it.