The highest point in Nottinghamshire can be seen from where I am sitting. It is now a hill covered in trees and has a monument on the top. This area in the past provided work for many but the work was hard. The work was down the pits, mining for coal. These days the unemployment is high, but people no longer have to work under the ground.
For those of you who haven't seen this picture before here is the monument at the highest point. It is called testing for gas, the man is holding his Davey Lamp. In the far background is Hardwick Hall, this is Lady Chatterley country too.
Testing for gas
Link to Wikipedia D. H. Lawrence.
The French word for slag heap is crassier.