But since shuttering operations decades ago, the mine has been an environmental hazard, with abandoned tunnels and tailings piles leaching arsenic and other heavy metals into nearby waterways.

Talon Metals said it would use a more traditional method of tunneling underground, and would keep all above-ground operations ...

A YouTuber has won retrospective planning permission to burrow a tunnel between his house and shed. Colin Furze spent three years digging the passage by hand under his Lincolnshire garden without ...