Qualla: Coalbrookdale

Coalbrookdale: Introduction

Mon, 25 May 2026 00:00:00 GMT

Photo credit Basher Eyre, CC BY-SA 2.0. In 1709 a young Quaker named Abraham Darby leased a derelict blast furnace in a wooded ravine of the Severn Gorge and tried something that ironmasters had attempted and abandoned for two centuries. Instead of fueling his furnace with expensive, scarce charcoal, he used coke - coal baked clean of its impurities, like the coke smelters of his earlier brass works had used in Bristol. The iron that ran out at the bottom was, against all expectation, good. It poured into moulds without the bubbles that the sulphur in raw coal would have caused. Within a few months Darby was casting iron cooking pots that were cheaper, thinner, and better than anything English foundries had ever produced. He had also, without quite realising it, started the Industrial Revolution.

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Image: Basher Eyre | CC BY-SA 2.0

Coalbrookdale: Caldebroke Smithy

Mon, 25 May 2026 00:00:00 GMT

Photo credit Row17, CC BY-SA 2.0. There had been ironworks in this valley long before Darby. At the Dissolution of the Monasteries in 1540, the lands here belonged to Much Wenlock Priory and contained a bloom smithy called "Caldebroke Smithy." John Brooke, the local landowner from about 1572, developed coal minin...

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Image: Row17 | CC BY-SA 2.0

Coalbrookdale: Why Coke Worked

Mon, 25 May 2026 00:00:00 GMT

Photo credit CC BY-SA 2.5. The breakthrough was geology and craft together. Coalbrookdale sits on a particular seam of low-sulphur "coking coal" easily mined from drift workings in the valley sides - cleaner than most British coals and therefore producing coke clean enough to make good iron. Darby seems to...

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Image: CC BY-SA 2.5

Coalbrookdale: The Furnace That Cast the Iron Bridge

Mon, 25 May 2026 00:00:00 GMT

Photo credit No machine-readable author provided. Jasonjsmith assumed (based on copyright claims)., Public domain. The Old Furnace - the very one Darby rebuilt in 1709 - still survives. It is now under a protective building erected in 1981, but the asymmetrical interior profile remains clearly visible. Abraham Darby III, the founder's grandson, enlarged it in the late 1770s to cast the iron c...

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Image: No machine-readable author provided. Jasonjsmith assumed (based on copyright claims). | Public domain

Coalbrookdale: What Coalbrookdale Built

Mon, 25 May 2026 00:00:00 GMT

Photo credit Mike Faherty, CC BY-SA 2.0. Through the 18th century the Coalbrookdale Company made the infrastructure of industrialisation. Cast-iron cooking pots and kettles for domestic kitchens. Pig iron for other foundries. From 1723, cylinders for Newcomen atmospheric engines - the steam engines that pumped out flood...

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Image: Mike Faherty | CC BY-SA 2.0

Coalbrookdale: Coalbrookdale by Night

Mon, 25 May 2026 00:00:00 GMT

Photo credit Philip James de Loutherbourg, Public domain. In 1801 the French painter Philip James de Loutherbourg, fresh from the wars and looking for a subject for the age, came up the Severn Gorge and painted what he saw at the Madeley Wood furnaces. *Coalbrookdale by Night* shows the iron foundries against a low mountain horizon, lit...

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Image: Philip James de Loutherbourg | Public domain