At the Hillcrest Baptist Medical Hospital in Waco, elderly people were wheeled in on stretchers. A man in a wheelchair with his T-shirt covered in blood winced as medical professionals tended to wounds on his head and left arm.
The town's volunteer firefighters had responded to a call at the plant at 7:29 p.m., Swanton said. Due to the plant's chemical stockpile, "they realized the seriousness of what they had," he said.
Muska was among the firefighters, and he and his colleagues were working to evacuate the area around the plant when the blast followed about 20 minutes later. Muska said it knocked off his fire helmet and blew out the doors and windows of his nearby home.
The main fire was under control as of 11 p.m., authorities said, but residents were urged to remain indoors because of the threat of new explosions or leaks of ammonia from the plant's ruins. Swanton said early Thursday authorities were not concerned about lingering smoke from the fire.
Dozens of emergency vehicles amassed at the scene in the hours after the blast. Firefighters used flashlights to search the still-burning skeleton of an apartment complex that was all but destroyed. All that remained of a nearby house was the fireplace and chimney, standing tall among smoldering embers of what was once someone's home. Smoke filled the air.
A flood-lit football field was initially used as a staging area, then other triage centers sprung up around the blast site. At one, an army of first responders evaluated senior citizens, many of whom were disoriented, dazed and panicked. Most were unsure what had happened.
"Get them into an ambulance now," workers shouted.
Those who were OK were loaded onto school buses, many in wheelchairs, to be taken to evacuation centers.