Media playback is unsupported on your device

Devon tungsten mine work begins

9 June 2014 Last updated at 10:52 BST

Work has started to excavate Britain's first new metal mine for more than 40 years.

The Hemerdon mine will exploit the world's fourth-largest deposit of tungsten.

Geologist Richard Scrivener told the BBC's Simon Clemison about how it is mined.

Copyright © 2015 BBC. The BBC is not responsible for the content of external sites. Read more.

This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.