Ta Dave, know that one well. Actually seen that one in situ as it were when we played in that quarry as kids..

That one was a face shovel. The RB 10 MacColl writes about in the song was probably a dragline; but again they were very adaptable machines!!

When I worked on't M62 assisted by Sir Alfred Macalpine, RB10's were also used as cranes for the shutterring, concrete skips and lifting steel on the bridges and so forth.