Nevertheless, the backlogs of current orders are large enough to keep factories operating for many months, the department said.

Thus this revenue system creates a powerful incentive for county and provincial governments to keep local factories running at all costs.

They also helped German aircraft makers - barred from military work - keep factories operating.

Eventually, laws were passed to keep factories from using children to do dangerous work.

More important, it kept factories and trains working.

The endless buying and importing has kept factories humming everywhere.

Keeping factories running has already proved a challenge.

A boom in export sales, aided by the lower value of the dollar, has kept factories humming.

In order to keep factories there have to be cars to be manufactured and buyers to buy them.

Someone has to keep the mines and factories running.