By 1608, Boyle had set up a mill in the area, and records from 1622 mention two iron mills operating at Tallow. Located about 1km south of the Bride river valley, these works represented an important industrial development in County Waterford.

Despite surviving the turbulent period of the 1640s, the ironworks had fallen into disuse by 1685, according to accounts by Sir Richard Cox. A forge is marked on Bateman’s map of 1717, likely representing the same industrial site. While the exact location remains somewhat uncertain, historians suggest it may have been at the site later occupied by a saw mill, marked on Ordnance Survey maps from 1840 and 1927 at the end of Mill Lane, though the visible remains appear to date from the 18th or 19th century.

Tallow’s ironworks form part of a broader pattern of industrial development initiated by the Earl of Cork throughout the region. The Irish name Tullach an Iarainn directly references this industrial heritage, reflecting a period when iron production was central to the economic life of the area. Though relatively short-lived, these works represent an important chapter in Ireland’s industrial history and the economic policies of the early colonial period.