Ironstone mine. Dates approximate. The mine was connected to the loading point at Laight Mine Loop by a tramway. The mine was number 1, the only Laight Mine.
Location names in dark blue are on the same original line.
eBay has some items listed which may be of interest. (Note that eBay sellers sometimes mis-identify locations.) RailScot is an eBay affiliate. Buying an item may help cover the running costs of the site.