Eleven men were injured yesterday, one of them critically, when two vehicles in which they were passengers collided on Kemp Mill Road in Wheaton, Montgomery County police said.

The injured were all immigrants from El Salvador and Guatemala who had been working together as carpenters on a construction project, according to police.

The accident occurred about 7 a.m. on the northbound lanes of Kemp Mill Road near Randolph Road when the bumpers of the van and a car became locked. The van spun out of control and slid for several hundred feet before it slammed into a utility post, police said.

Eight of the men were taken to Holy Cross Hospital, where four were admitted in guarded condition. Three were taken to Suburban Hospital, where one of them was listed in critical condition with severe head injuries.

Police said none of the van's occupants was wearing a seat belt, and it was not known whether the car's occupants were wearing them.

The driver of the van was identified as Carlos Oliva, 44, of 2807 Fairmont St. in Falls Church. The driver of the car, who did not require medical treatment, was identified as Porfirio Villatora, 22, of 1422 Kingwood Dr. in Silver Spring.