Remains of a lead mine halvans plant, part of the Minera Lead Mines complex (nprn 33932). The Minera halvans plant was built by the Taylors mining company between 1872 and 1874 to extract lead ore from existing low grade waste (or 'halvans') heaps in the area. The plant included a beam engine, primary and secondary Cornish crushers, jigs, ore bin, boiler house and six buddles.
Source: Cadw scheduling description.