Three workers are dead, three others remain unaccounted for and two others are hospitalized in critical condition following an explosion at a grain elevator in northeast Kansas.

Atchison City Manager Trey Cocking says officials are weighing whether it's safe to send fire teams into the Bartlett Grain Company facility, which sustained significant damage in the Saturday night explosion seen as far as Missouri.

Bartlett Grain Company is located at 320 Riverfront Road, and some residents living as far as two miles away said they could feel their houses shaking from the explosion.

Among the missing are one worker from the elevator company and two state grain inspectors.

Two other victims who were admitted to the burn unit of University of Kansas Hospital in Kansas City, Kan., were listed in critical condition Sunday morning.

Cocking says four other people associated with the explosion escaped without injuries.

With smoke still billowing from the facility Sunday, train traffic past the elevator was being rerouted.