This is what i found from the book:
That a Mint for the purpose of a national coinage be, and the same is established; to be situated and carried on at the seat of the Government of the United States, for the time being: And that for the well conducting of the business of the said Mint, there shall be the following officers and persons, namely, – a Director, an assayer, a chief coiner, an engraver, a treasurer.
It could be wrong and I’m sorry if I was wrong.