Two people were critically injured Monday morning in an accident on U.S. Highway 67 east of Glen Rose when an SUV slammed into a sand truck pulling onto the road and a pickup truck crashed into the accident scene.

Another vehicle, a truck and longbed trailer carrying heavy equipment, ran into the ditch trying to avoid the accident.

Heavy fog contributed to the mishap, law enforcement authorities said.

The driver of the SUV, a man, was trapped in the vehicle. Rescue workers cut the top off the vehicle, which had slid beneath the truck.

Identities of the victims were being withheld pending notification of next-of-kin.

After working to free the driver for more than hour, Unimin, which owns the plant where the truck picked up the sand, brought out a front-end loader to help get the back of the truck off the SUV.

Emergency medical personnel attended to the man while rescue workers tried to free him. A nurse held an IV above the driver. Finally, he was free and medical personnel got him on a stretcher and wheeled him to an ambulance. He and a passenger in the SUV were taken to Texas Harris Health Methodist Hospital in Cleburne.

Air ambulances could not be dispatched to the scene because of the thick fog.

The accident occurred between 8 and 9 a.m. on Highway 67 at the County Road 308 intersection.

Law enforcement authorities said the truck, owned by Tutle & Tutle Trucking Co., was pulling out onto the highway to head east. The SUV was heading westbound and apparently did not see the truck.

An eyewitness who worked across the street said he heard a loud crash and ran outside to see the first accident. Then the white pickup came upon the accident scene and apparently could not stop in time.

The pickup's front end was crushed and the windshield smashed.

"Cars were sliding around all over the place," the eyewitness said.

The crash caused very fine sand to spill out of the truck and onto the highway.

U.S. Highway 67 was closed for several hours. The Texas Department of Transportation set up a digital sign on the side of the highway to warn of an accident ahead. TxDot flagmen directed travelers to other routes.

As of 11 a.m. the highway still was shut down. Tow trucks were on the scene, DPS troopers were photographing the scene and workers were beginning to clean up spilled sand and pieces of wreckage.

The scene was a mass of rescue trucks, Department of Public Safety trooper vehicles, flashing lights and dozens of rescue personnel from the Somervell County Sheriff's Department, Somervell County Fire Department, Bono Fire Department, Johnson County Fire Department and Grandview Fire Rescue.

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