Great Laxey Mine

Overview

Great Laxey Mine was, at its Victorian peak, the richest metal mine on the Isle of Man and one of the most productive zinc mines anywhere in the British Isles. It's better known today for the structure built to keep it dry: the Lady Isabella, the largest working waterwheel in the world.

History

Zinc and lead ore were discovered in the Laxey valley in the 1780s, and mining developed steadily through the early 19th century under licence from George Murray, 6th Duke of Atholl. The Great Laxey Mining Company Limited was formed in 1848 to consolidate and expand operations, and the mine grew into the largest employer on the island, with over 600 workers at its peak. By the early 1900s the mine was raising a mix of lead, zinc, silver and copper ore from three main shafts — the Welsh Shaft, Dumbell's Shaft and the Engine Shaft — connected by an extensive network of levels reaching over 2,200 ft (670 m) below surface. At full production, Laxey produced more zinc than any other mine in the British Isles, and shares that had traded for as little as £34 in the late 1820s were changing hands for £1,500–£2,000 by 1833. A rich new vein found in 1901 briefly promised further expansion, but instead brought on uncontrollable flooding — by 1902 water was reported rising by six inches a day, and the narrow Victorian shafts proved unsuitable for the electric pumps that might otherwise have coped. Combined with increasingly antiquated pumping machinery elsewhere in the mine, the flooding proved impossible to overcome, and the mine closed in 1929, though processing of surface spoil continued for a few more years, into the mid-1930s.

Geology

The mine worked lead, zinc, silver and copper-bearing veins in the Laxey valley; a galena (lead sulphide) specimen from the mine, weighing 118 kg, is recognised as one of the largest sulphide crystals known and is held by the Natural History Museum in London.

Workings

Ore was raised from three principal shafts — the Welsh Shaft, Dumbell's Shaft and the Engine Shaft — linked by levels extending to over 2,200 ft (670 m) depth. From 1854 the mine's water problems were addressed by the Lady Isabella waterwheel, built to a design by the engineer Robert Casement specifically to pump water out of the workings; ore was processed at dedicated washing floors built in 1848.

Closure

Persistent flooding, worsened by a rich but wet new vein struck in 1901, combined with ageing pumping equipment to force closure in 1929; reprocessing of surface spoil continued on a small scale until around 1934.

What remains

The Lady Isabella waterwheel survives and is a major visitor attraction, with displays at the site; visitors can venture a short distance into one of the adits. Mineral specimens from the mine are held at the Manx Museum.

Surviving features include the Lady Isabella waterwheel (the largest working waterwheel in the world, at 72 ft 6 in / 22 m diameter), the 1848 washing floors, and remains of the mine railway used to move ore and spoil around the site.

Redevelopment

The site is now managed as a heritage attraction, with the Great Laxey Mine Railway and washing floors forming part of a wider Laxey Mines Trail alongside the wheel itself.

Abandoned workings can be dangerous — unstable ground, uncapped shafts, flooding and bad air are common even where a site looks safe from the surface. This entry describes history and general location only; it is not an access guide.

Recorded claims

Individual factual claims, each attached to the source(s) that support it below. Where sources disagree, both are kept.

• The Lady Isabella waterwheel, built to pump water from the mine, had its grand opening on 27 September 1854 and remains the largest working waterwheel in the world. ¹
• At full production Great Laxey Mine produced more zinc ore than any other mine in the British Isles. ¹
• A 118 kg galena specimen recovered from the mine is recognised as one of the largest sulphide crystals known, and is held by the Natural History Museum, London. ¹

Photographs & further reading

This page doesn't try to reproduce everything — these are the best original sources found for this mine.

Images

Sources

1. (secondary) Laxey Mine — Wikipedia
2. (secondary) Laxey Mine — Manx Geological Survey