three-shift work

The three-shift work at the site involving 200 workers ensured speedy construction of the building.

Tom told him of the latest request from Washington and asked that another three-shift work schedule be set up to turn out the additional Quakelizors.

Under the circumstances, then, three-shift work on the Platform was resumed, and three times in each twenty-four hours fleets of busses rolled out of Bootstrap carrying men to work in the Shed, and rolled back again loaded with men who had just stopped working there.