At intervals of several hundred feet the officials stopped the truck and train to see what the driver and engineer could have seen.

Fires burned in large drums at intervals of so many feet.

Held up by stakes hand-driven at intervals of 10 feet.

Placing commercial traps at intervals of 150 to 200 feet around a zone requiring protection is recommended.

The mines are laid at a minimum interval of six feet.

From 1989 to 1993, approximately 20,000 shovel tests were performed at intervals of thirteen feet (4 m).

The A-10s separated from their interval of only a few feet to an extended attack formation that left miles between aircraft.

I could feel him quivering again across an interval of six feet.

An extension east involved locks there with a vertical interval of 21 feet (6.4 m).

There were iron rings fixed to the wall, however, seven feet off the floor and at intervals of six feet.