No.
Plant explosions do happen on occasion, but they're usually small tanks or fires that break out. What happened here was a simple blaze occurred and managed to reach one of the ammonia tanks. Pressure built up when the ammonia was being heated, and the tank ruptured and exploded. There is no indication of this being a bombing or sabotage.
The ammonia dissipated rather quickly, but the biggest issue was that the wind was blowing toward the northern section of Wako and the highway, dosing hundreds if not thousands of people with the fumes. The wind has since changed and is blowing any remaining gas toward rural farmland, so the emergency workers are focused on putting out the fires, ensuring the other tank(s) don't rupture, and search-and-rescue for those who's homes were damaged or destroyed in the blast.
Just the astronomically terrible luck.
Viuff The Dancing Murloc wrote:
not to be disrespectful but what the hell is going on over there in USA?
It's fine. We have issues with chemical fires/explosions several times a year, and typically they're not really heavily reported on because we're a bit too focused on what moviestar happened to wear at some event or something.
Right now though, everyone is a little on edge. With gun rights being talked about, DPNK's test launches, and the Boston bombing, we're a bit paranoid and our eyes are darting around looking for signs of danger. It's a human survival tactic, and we're having a rather bloody April this year.