From 1840 until 1920 Wheal Maria produced copper,
lead and arsenic. It was part of the Devon Great Consuls mine - at one time
the world's largest producer of copper
©WesternWeb
From 1840 until 1920 Wheal Maria produced copper,
lead and arsenic. It was part of the Devon Great Consuls mine - at one time
the world's largest producer of copper
©WesternWeb