Traces

The stones I photograph carry industrial memory in their chemistry. They come from two neighbouring beaches on the Durham coast near Seaham. Blast Beach takes its name from the blast furnaces of the Victorian ironworks at Nose’s Point, whose slag was tipped over the cliffs into the sea. Just to the south, at Hawthorn Hive, the shore is scattered with waste from the Durham collieries, once tipped onto this coast by the million tonnes each year.

Between 1997 and 2002, the Turning the Tide project removed more than a million tonnes of spoil and restored the coastline, now designated Heritage Coast. Yet the industry has not gone. Fragments of slag and colliery waste remain among the pebbles, and pools of orange and yellow water still gather on the beach, stained by iron leaching from the old mine waste.

Up close, each fragment records a moment of change. Blue glass formed where molten slag cooled too quickly to crystallise, its bubbles holding gas frozen mid-escape. Shale from the coal seams carries pyrite, which breaks down in air and water into sulphuric acid and iron, staining the stones with the orange ochre known as “yellow boy.” Oxide films thinner than a soap bubble split light into purples and blues. Some stones are clearly made by industry, some are natural rock altered by it, and some are impossible to place.

Alongside the stones are images of wood: conifer bark sealed with white resin where it was wounded, and the silvered grain of a long-felled tree. They show the story at its beginning. Coal formed from forests that grew some 300 million years ago, their carbon buried and compressed over millions of years. Mining and burning it released that carbon in a couple of centuries, and left its wastes on the shore as new kinds of stone, made in decades rather than ages and now being reworked by the sea.

Industrial heritage is not only kept in museums and memories. It is written into the substance of the land, not as surface scars but as changes to the chemistry of the stone itself.