Four people have died and scores have been injured in explosions at industrial plants in two states. Two workers were killed and at least 10 others were injured, some critically, at an animal feed plant in Omaha, Nebraska. Omaha fire chief Bernard Kanger said the building suffered major damage.

Bernard Kanger: “This is a large building with significant structural damage. At 1400 hours — I’m sorry, 2:00 this afternoon, we went from a rescue mode into a recovery mode. What that means is we’ve slowed down our operation. The chance of finding any victims that are alive has — is no longer there. And now it is a recovery mode, where our efforts are to secure the building, go in and retrieve the victims and search for additional victims that may be in the structure.”

Meanwhile in Madill, Oklahoma, two workers burned to death after their plant’s furnace exploded.