Black and white photo of a painting.
Built 1799 destroyed in Freak Flood 1894. The Great Zennor Flood which swept down valley. The mill was empty at the time, waiting for the new owner.
In the 19th century, large quantities of arsenic were refined and exported to the Americas for use against the boll weevil which was then threatening to destroy American cotton crops. After heat treatment, the arsenic was ground in a mill similar…