Around 1796, Sweetser constructed a new chocolate factory about seventy feet northwest of the grist mill.
From 1816 to 1820, the mill was rented to William Smith, who manufactured chocolate for Chase & Page of Salem, Massachusetts.
[1] In 1822, duck cloth manufacturer William Gray took apart his Stoneham, Massachusetts factory and reassembled it between the chocolate and grist mills to form one building about 150 feet in length.
The company spent a considerable amount of money making improvements to the mill, however the business was not successful and folded at the end of 1825.
In 1835, Livermore & Kendall purchased the property, which they named Rockville, and managed it for the New England Wool Company.
Also in 1846, Pranker enlarged a dam on the Saugus River by two feet, which raised the water level of a pond that bears his name.
In 1860 he built a two-story, 125 by 60 foot, mill located on opposite side of the road that contained four sets of wool manufacturing equipment.
In 1884, a one hundred foot high round brick chimney was constructed next to the building housing the mill's boiler.
That year, the business was reorganized as the Saugus Woolen Manufacturing Co. George Parsons, one of Edward Pranker's grandsons, served as the company's president.
[3] In 1904, the mills were purchased by the Saugus Manufacturing Company, a new corporation formed by business interests from New Bedford, Massachusetts.