Mine Buildings Including Wheel Pit And Arsenic Calciner Wheal Benny

The mine buildings at Wheal Benny, including a wheel pit and an arsenic calciner, date from the late 19th century. They are constructed from slatestone rubble with brick dressings. The site is located on the bank of the River Tamar and features a wheel pit large enough to accommodate a 50-foot wheel, four tin buddles, and a Brunton calciner with flues. The calciner has a square plan and includes a round-arched opening at the front that leads to an internal vault, with a grate located on the left side. The flues are situated to the west of the calciner, above ground, and feature arched openings. At the eastern end of the site, there is a wheel pit with rubble walls and an external rubble housing for the wheel shaft. The mine was powered by water, with a leat running above the mine to the south.