Hi John,
Not sure about your Mike L naming, the same person re-appears in a photo of the horse gin wheel in Scaleburn and looks quite female in that image, Definitely DP but I don't know about the two younger folk.
Out of interest John, why do your posts often arrive with a duplicate?
Just a few more of JFM's left to put onto AditNow including some interesting ones from Hard Level Gill's 1970/80's fluorspar plant that was also covered in an article in BM 100.
Jim