But Where Did They Get The Concrete?

The historic city of Bath in England is famed for both the Roman spas that gave the town its name, and for the wonderful architecture of the Georgian houses that were later built to take advantage of them. These homes were all the more beautiful for being built from "Bath stone", a richly honey-coloured limestone that was quarried from mines in nearby Combe Down, now a thriving suburb of the City of Bath. And therein lies the problem. The limestone mines have been abandoned for over a century, and the Georgian miners were none too careful to begin with, meaning that much of the 9 miles of mineshafts are unstable, and some are barely 6 feet below the surface. With over 700 homes at risk of disappearing into the ground with no warning, the local North-East Somerset Council has spent £160 million ($260 million) stabilising the mines and filling them in again with concrete foam in a 10 year project that comes to an end today (BBC News).

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