 Mendham had a mill in 1086, although the present building was constructed in 1807, and was extended in 1871, when a grasshopper beam engine was installed to supplement the water wheel, which only had a fall of , when water levels were low.The machinery was modernised in 1905, when the number of stones was reduced from nine to four, to make way for a roller plant.The beam engine was replaced in 1923, having been driven and maintained for over 50 years by Jimmy Souter.