Which preposition to use with churnings

of Occurrences 11%

I did not know then, but have learnt since, that where there is a loud noise, such as the roaring of a cascade, the churning of a mill, or, as here, the rage and bluster of a stormif there arise some different sound, even though it be as slight as the whistle of a bird, 'twill strike the ear clear above the general din.

for Occurrences 1%

Some persons prefer making up a separate churning for the milk of each cow; in which there is some advantage.

in Occurrences 1%

We well remember the time when nobody suspected that person, whoever he might be,and nobody much cared who he was,of any relationship to the individual whose memory Sancho blessed, so great was the churning in the palaces that then floated.

Which preposition to use with  churnings