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In 1590, Sir George Bruce built a stone tower out in the waters of the Firth of Forth. Down through it a shaft was sunk, 40ft to the seam of coal below, and a corresponding shaft was dug for drainage. It was a breathtaking feat of 16th-century engineering.
In 1590, Sir George Bruce built a stone tower out in the waters of the Firth of Forth. Down through it a shaft was sunk, 40ft to the seam of coal below, and a corresponding shaft was dug for drainage. It was a breathtaking feat of 16th-century engineering.