Which preposition to use with clampings

during Occurrences 1%

What the force of those waves can be, even on that sheltered coast, you may judgeat least you could have judged this time last yearby the masses of masonry torn from their iron clampings during the gale of three winters since.

of Occurrences 1%

The faint but distinct clamping of horses' hoofs was heard.

Which preposition to use with  clampings