A 100m (328ft) borehole close to the scene of a fatal explosion and house fire has been filled with cement to make it gas-tight, the Health and Safety Executive (HSE) has confirmed. Eighty-five ...
The official name for the so-called "well to hell" is the Kola Superdeep Borehole SG-3 – but that's not as catchy. It's currently the deepest man-made hole on Earth, reaching a dizzying 40,230 ...