In 1855, the top half of the mill was rebuilt after a fire, but also to accommodate the Royal River Manufacturing Company, which was incorporated in 1857.

It was one of the leading industries in Yarmouth, spinning coarse and fine yarn and seamless grain bags, of which it produced up to one thousand per day.

They remained tenants for the next 39 years, until 1992, when the decision was made to divide the mill's interior up into multiple business for extra revenue.

Formerly headquartered in the mill, they have since moved to Portland, and have regional offices in Faneuil Hall, Boston, and in New York City.

It stands on the site of the mill run by Massachusetts natives William Hawes and father-and-son duo Henry and George Cox.