The tracks passed through cast iron tubes underneath the Fleet sewer.

"They are iron tubes with gunpowder and lead balls," the man said.

But this time you have none of your iron tubes which alone we fear.

Could he build something that throws a firework of sorts in a thin black iron tube?

In one end of the box drill a hole and insert an iron tube.

Where can I get a whole bunch of plastic sheeting and some iron tubes?

The zinc was collected by iron tubes into water.

I wish there was a practical way to cast an iron tube.

Remaining guns with iron tubes were used for sea service.

The two marines lifted another rocket into the black iron tube.