The mine was abandoned and evidence suggests it was not worked again until the late 17th, 18th and 19th centuries. Mining began in the late 17th century due to the demand for copper and improved ability to pump water out of the mine. A steam engine was introduced in 1832 and ten years later an 822-metre long tunnel was mined at sea level to drain the deeper mine workings. Commercial-scale mining on the Great Orme ended in the 1850s, although small scale mining continued until the mines were finally abandoned in 1881.