A steam engine was installed in 1894, and became the mill's sole source of power after a storm damaged it in 1897 or 1898.

[2] It incorporated parts from the earlier Ham Mill,[1] a few hundred yards to the north east.

He was later assisted by his son William, who lost an arm when he was thirteen due to an accident at a watermill in Low Ham.

The mill was damaged by storms in 1897 or 1898 and after that was only powered by the steam engine, which had been installed in 1894, rather than the wind.

[2] Hook sold the mill and 5 acres (2.0 ha) of land to Dr. Hugh Hale Leigh Bellot for £500.

[5] In 1969 Professor Bellot left the windmill, miller's cottage and garden to the National Trust in his will.

[11] Before the restoration work was undertaken surveys revealed that the mill was used as a roost for long-eared and lesser horseshoe bats.

The windshaft is of wood, with a cast iron cross, which carries four common sails.

No other machinery remains, since the wallower, upright shaft and great spur wheel were removed after the mill ceased to operate by wind The mill has four floors, a thatched cap and is constructed of local limestone known in the area as Blue Lias.