She removed the iron mask before we put him into the earth.

You don't put an iron mask on a face to hide identity.

She had retreated behind the iron mask of her training.

He could be doing anything behind that iron mask.

Over time, Washington would retreat behind an iron mask of self-control.

"Am I expected to spend the rest of my life with it on my head like the man in the iron mask?"

A very old man lay behind the iron mask.

This was the iron mask it smothered your smile with.

Not even an iron mask could have saved him.

It seemed, in its rigid immobility, like an iron mask.