It is often forgotten how important coal was to the economy until the middle of the 20th Century. If you get the chance do visit Wollaton Hall in Nottingham. It was the home of the Willoughby family.
At one stage their wealth came about through coal mining.
The following photographs are of the house and gardens. The animal trophy heads are the result of various hunting expeditions by members of the family. See below for more detail
Here are some useful links
Then there are the modern day images of coal. A coal fired power station. Still very much needed to produce electricity when there is no sun or wind.