The Strata Group – Railway Sleepers & Solid Fuels Quality Products Distributed throughout the UK & Ireland

How Coal Was Made

In Britain, coal was formed at various times between 170 million to 300 million years ago. Coal began as ancient forests and vegetation which became buried and compressed by earth, rock and lava over long periods of time. The rotting vegetation was eventually composted, condensed and compressed, under extreme pressure, which formed coal. These layers of compacted ancient forest have now formed coal

seams as deep as 800 metres which run for hundreds of miles across Britain.

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