Devon Great Consols. Area: A10ii

Adam Sharpe © Cornwall Council

BRITISH NGR: SX 42643 73266 (centre), Lat/Long: 50°32' 16" N - 04° 13' 19" W (centre)

The discovery of a major copper lode at Wheal Maria in 1844 started an extremely profitable venture which was to become the greatest copper mine in Cornwall and Devon and eventually the world’s largest producer of arsenic.