Which preposition to use with filatures

in Occurrences 4%

In 1752, Mr. Robinson returned to England, and his place was partially supplied by Joseph Ottolenghe, a native of Piedmont, and a proficient in his art, who came to Georgia on the 18th of July, 1751, and took charge of the filature in April, 1753.

at Occurrences 1%

"I think him the most prudent as well as the most capable person I ever knew, to undertake such a work, and if he could be continued here, I doubt not but that he would turn out a number of well instructed reelers, who would be able to conduct filatures at Ebenezer, Augusta, and other parts of the province."

to Occurrences 1%

and the Assembly answered, "We shall not fail to consider how it may be expedient to apply the filature to some public use;" and henceforth it was used as an assembly or ball-room, a place where societies held their meetings, and where divine service was occasionally conducted: more recently, it was converted into a dwelling-house, and was thus appropriated at the time of its destruction by fire, on the afternoon of March 25, 1839.

Which preposition to use with  filatures