TACOMA, Wash. (AP) — An explosion at a foundry was triggered when a propane tanker burst into flames, touching off a series of other blasts, authorities said.

The Saturday blast sent a fireball into the sky over the Atlas Castings and Technology foundry. It could take days to find out why the delivery truck, loaded with 8,000 gallons of propane, exploded, authorities said.

The truck driver, identified as Charles McDonald, 64, was in critical condition at a Seattle hospital Sunday.

Join the Conversation
Looking for comments?
Find comments in their new home! Click the buttons at the top or within the article to view them — or use the button below for quick access.