Two construction workers remained hospitalized Tuesday, one in critical condition, with injuries they received when approximately two tons of plywood fell on top of them Monday afternoon.

Workers were in the beginning stages of constructing a roof on a small commercial strip building at 1874 W. Parkway Blvd. (2495 South) when the accident occurred. Three men were working on the roof about 1 p.m. when two "extremely heavy loads" of plywood decking were placed on top of the roof's trusses."When they laid the pallet of plywood on top, the roof collapsed," said West Valley Fire Marshal John Blundell. "The truss failed and twisted and the two construction workers were thrown off the roof."

"I heard a crack and everything sucked in. It just dropped," explained Dan Hooper, who was working on the roof. "I grabbed the wall, or I would have fallen."

Ron Hart, 31, of South Ogden, and Mark Jensen, 36, address unknown, fell several feet to a concrete surface. A load of about 30 sheets of plywood then fell on top of them.

"I heard the crash and I saw the roof cave in," said Paul Vieweg, who along with his co-workers, immediately began pulling the heavy sheets of plywood off of the victims.

"We could just see his (Hart's) feet . . . We pulled the boards off as fast as we could," he said.

Paramedics treated the victims at the scene and then took them to local hospitals. Hart was taken by Life Flight helicopter to LDS Hospital, where he was in critical condition Tuesday with extensive internal and head injuries.

Jensen was in serious but stable condition early Tuesday at Pioneer Valley Hospital with fractured bones and lower back and head injuries. Both men work for Brubaker Construction in Holladay.

"They may have been trying to load too much in one area or there was a weak truss," Blundell said. The incident is still under investigation.