@Vic Patterson - I copied @Canny lass's question + the info you found on the DMM site to Alan Dickson of the Facebook group Barrington, Barnt' n memories and stuff!! and he replied :- Alan , that's a thoosand miles wrong, A scuffler followed the old fashioned cutting machine up the coal face and filled away the carvings, that very small cut coal from under the cut to improve the shots that broke the coal up. My very first peace work job at Bed A pit.
Naturally I haven't got a clue - just copied and pasted the questions and reply.