What's happened to all of Mansfield and Ashfield's former colliery sites?

One of our areas oldest collieries, Pleasley was sunk in the 1870s by a company owned by William Edward Nightingale, father of famous nurse Florence Nightingale. 
Now it is a museum around the historic headstocks, with a nature reserve.One of our areas oldest collieries, Pleasley was sunk in the 1870s by a company owned by William Edward Nightingale, father of famous nurse Florence Nightingale. 
Now it is a museum around the historic headstocks, with a nature reserve.
One of our areas oldest collieries, Pleasley was sunk in the 1870s by a company owned by William Edward Nightingale, father of famous nurse Florence Nightingale. Now it is a museum around the historic headstocks, with a nature reserve.
It is not all that long ago that tens of thousands of men in Nottinghamshire worked down coal mines.

Just a few years after the last of the pits closed and there is now almost no visible trace of the once-colossal infrastructure which once supported the industry. Your Chad has taken a look at what was there before, and what there is now on the sites of some of the area’s biggest former coal mines.