Two people were killed in separate weekend accidents on Utah highways, including a 14-year-old Ephraim girl who died when the car in which she was riding collided with a coal truck, authorities say.

KILLED:Marian Allen, 14, Ephraim.

Kimberly White, 17, Sandy.

Emery County Deputy Sheriff J.D. Mangum said the driver of the Allen car was attempting a U-turn on U-57 south of Castle Dale at 11:50 p.m. Friday when the vehicle collided with a Western Coal truck. He said Allen was killed and her teen-age companions, Spencer Allen, Ephraim, and Nathan Graham, Manti, both 16, were injured.

Graham was taken by helicopter to LDS Hospital in Salt Lake City, where he remained in critical condition Monday, a hospital spokesman said.

Allen was treated at Castle View Hospital in Price and released Sunday, according to Emery County Deputy Sheriff John Burdick.

White was killed late Saturday in a two-car collision on south State Street in Sandy. She was driving westbound on 106th South when her car collided in the intersection of State Street with a northbound vehicle driven by John B. Carter, 35, Draper, said Sandy police.

White was taken by air ambulance to LDS Hospital, where she was pronounced dead.

Carter was treated at Alta View Hospital for minor injuries and booked into Salt Lake County Jail for investigation of automobile homicide and driving on a suspended driver's license, according to an accident report.

Suzette Anderson, 17, Murray, a passenger in the White vehicle, was treated at Alta View and transferred to Cottonwood Hospital, where she was in satisfactory condition Monday.