The town's mines tended to close and reopen, often not remaining operational for any great length of time.

The offices of the U.S. Forest Service have remained operational to the present day.

The radial-powered Valparaisos also proved successful in Portuguese service, remaining operational until 1943, finally being replaced by Westland Lysanders.

Stephen Hart, a Presidential spokesman, said the traveling White House communications system was switched to an emergency generator and remained operational.

The ride was built at the park in 1932 and has remained operational.

The station, renamed Orcadas Base, has remained operational ever since, having been rebuilt and extended several times.

By the end of the Soviet era, only two Armenian churches had remained operational.

Production in France recently halted, with one factory remaining operational in the Netherlands.

Augusta sank Boulonnais at noon and the only French destroyer remaining operational was L'Alcyon.

The Walney was damaged above the waterline, but remained operational.