Update 5:52 p.m. - Police have identified the man killed at Loy-Lange Box Company as 59-year-old Kenneth Trentham of the 4500 block of Tholozan Avenue.
Update 4:10 p.m.: A person who was crushed beneath a piece of a falling boiler is on life support, and another badly injured person at the site of the initial blast was undergoing surgery this afternoon, St. Louis Fire Chief Dennis Jenkerson told reporters during a 3 p.m. news conference.…