Middleton Tyas Copper Mine

Overview

Middleton Tyas, worked sporadically since the 15th century, briefly became one of the highest-grade copper sources in Europe during its mid-18th-century heyday — though the deposit was small enough, and the flooding bad enough, that the boom barely outlasted a generation.

History

Copper mining had been carried on sporadically at Middleton Tyas since the 15th century, but the period of most intense activity came in the mid-18th century, when several richly, if patchily, mineralised veins were worked beneath land divided among five different landowners. Disputes between them over boundaries and drainage regularly ended in litigation, and occasionally in violence. The mines themselves were usually worked not by the landowners directly but by lessees, often working partnerships of miners. The ore was exceptional: Middleton Tyas copper ranked among the highest-grade deposits found anywhere in Europe, though the total quantity present was small. Flooding was a constant problem, initially managed with hand pumps; by 1752 these had proved inadequate, and at least two horse-powered pumping engines were installed that November. Mining had effectively ceased by the middle of the 18th century, after which none of the veins is recorded as having been worked again.

Geology

The mine worked richly but patchily mineralised copper veins hosted in the Carboniferous rocks of Richmondshire, a smaller and more localised deposit than the major orefields of Cornwall or the Pennines.

Geological setting: Hydrothermal Deposits (well documented example), Veins and Lodes (well documented example)

Workings

Workings were drained first by hand pumps and, from November 1752, by at least two horse-powered pumping engines housed in an engine house whose ruins survive; the earthwork and buried remains of the workings extend north, north-west and east of the parish church.

Closure

Mining had effectively ceased by the middle of the 18th century as the small, high-grade deposit was worked out; no later revival is recorded.

What remains

The buried and earthwork remains of the mine workings, together with the standing ruins of an 18th-century engine house, survive as a Scheduled Monument around the parish church of St Michael and All Angels.

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.

• Middleton Tyas copper was rated among the highest-grade ore deposits found anywhere in Europe, though the total quantity present was small. ¹
• Flooding, managed initially with hand pumps, became severe enough that at least two horse-powered pumping engines were installed in November 1752. ^1,2

Images

Sources

1. (secondary) Parishes: Middleton Tyas — Victoria County History / British History Online
2. (primary) Copper mine and medieval ridge and furrow, Middleton Tyas — Historic England (Scheduled Monument record)
3. (primary) Middleton Tyas Mines & Shafts (BGS Mine Plans Catalogue) — British Geological Survey

Record created: 22 August 2026 · Last researched: 22 August 2026