East Pool Mine Engine House

The East Pool Mine Engine House is a Grade II listed winding engine house, also known as a "whim," located at Mitchell's shaft of the former East Pool tin mine. Built in 1887, it now serves as a working museum managed by the National Trust. The building was restored after being damaged by a thunderbolt in 1987, with repairs ongoing at the time of the survey in 1988.

Constructed from uncoursed killas rubble with quoins, the engine house features a bob wall made of large dressed granite blocks, brick window arches, and a cantilevered steel-frame bob platform topped with a slate roof. It has a rectangular plan oriented on an east-west axis, with the bob wall on the east side, a chimney attached at the north-west corner, and a lean-to boiler house on the south side. In front of the bob wall, there is a fly-wheel and winding drum.

The structure consists of three stages, with round-headed openings, including a driver's window in the bob wall and a large cylinder window in the rear wall. The prominent bob platform projects from the third stage, and the tapered cylindrical chimney stack has a brick upper stage.

Inside, the engine house contains a restored 30-inch cylinder engine and beam, both in working order, along with two boilers in the boiler house, which are not currently in use. Historically, the mine was operational for copper from the early 18th century until 1784, and from 1834 to 1896 it produced copper and tin. It was united with Wheal Agar mine in 1897 as East Pool and Agar Limited (EPAL) and closed in 1945.