Yesterday the word came through that they had opened the river to two-way traffic 24 hours a day, down to (the river's mouth at) South Pass, which is very good news,

It was built in 16 months. They employed 15,000 workers who worked 24 hours a day to build this building. It started in '41 and was completed in January of '43. The U.S. at the time was looking at the possible entry into World War II, and the various military departments were scattered around town in 17 different buildings.

This went on 24 hours a day.

There are 24 hours in a day, and you can use all of them.

The rig is operating 24 hours per day, seven days per week, until we get down to our total depth.

It's better and easier on the transmitter to be on the air 24 hours a day rather than shutting it down at sign off time and then turning the thing on again in the morning at 6 am, its much easier this way.