Hells Bells Pete.... the noise must of been amazing!!! I been onto a mate who was/is a mines engineer in uk NCB and abroad and he had heard of this but didn't really know what it was .... he thought it just tipped right over... not upside down.... he stunned and adamant it must be unique in uk... he says he never seen one abroad and its not in any of his ref books. Good though!!! Nice piece of engineering. :thumbsup:
Aaaaaaaaaaaaaaaaaaagh Creeper!!!!!