Six people were injured

one critically - in a two-car accident Monday night. But police say seat belts made a big difference for at least two of the injured.

Leland Matthews, 50, of Salt Lake, was in critical condition at University Hospital with severe facial injuries and a fractured femur, a nursing supervisor said. His wife, Karen, 51, and daughter Lori Matthews, 29, Salt Lake, were both in satisfactory condition Monday night at St. Mark's Hospital.Lori's 2-year-old daughter Morgan was pinned in the vehicle for a time before rescuers could free her, said Corp. Dennis Leavitt of the Salt Lake County Sheriff's Office. The child was in fair condition at Primary Children's Medical Center.

"She (Morgan) was in a child restraint and it saved her life," Leavitt said. Lori Matthews was also wearing a seat belt during the accident; otherwise she might have been killed, he said.

Leavitt said Rebecca Mason, 17, of Salt Lake, was driving southbound on Wasatch Boulevard at 5:40 p.m. and swerved to avoid hitting a car that had slowed down in front of her. Mason swerved her vehicle left of the center line and collided head-on with a car driven by Lori Matthews.

Mason was treated and released from Cottonwood Hospital. Megan Matthews, 19, another daughter of Leland and Karen Matthews, was treated and released from St. Mark's Hospital.