In 1588, Spilman converted the corn mill into a paper mill, and obtained a monopoly for his paper by manipulating the favour and patronage of successive monarchs. Thomas Churchyard wrote a long poem in 1588, the first description of the papermaking process. Spielman employed 600 men, mainly Germans. The mills remained in the Spilman family until 1679, then a Mr Blackman was the owner in 1686 but he was bankrupt by 1739. Messrs. Pike and Edsall purchased the mill and converted it into a gunpowder mill.There were explosions here in 1745, 1790, 1795, 1796, 1799 and 1833. These killed at least forty people. Edsall went bankrupt in 1778 and the mills were purchased by Messrs Pigou and Andrews. The mill was a papermill by 1840, when William Wiggins was the owner.