It had seemed the core of Ortygia must be solid iron.

It has no problem cutting through steel weapons or solid iron.

Its bars are solid iron, which means that they can't rust from the inside.

The gate was solid iron, set in stone, and the ropes were sturdy.

New manufacturing processes made it possible to produce long beams of solid iron.

"How can they stand in solid iron and not be able to use it?"

It glided right through the solid iron, and then came dancing back again.

It was bare; trees just did not seem to grow well on solid iron.

While there, he made successful trials for boring cannon from solid iron.

Do you know how much eleven stone of solid iron weighs?