Silkstone Main Colliery appears to be a generic name that covers a number of pits in the area (OS Map 1855) and quite a network of mineral railways connecting them that stretches from Top Pit Wood in the west to the railway at Worsborough Dale.
Along the mineral railway, I can roughly make out Stoney Royd, Ratten Row, Top Pit and Low Pit, coke ovens, lots of unnamed shafts and a couple of Engine Houses on the '55 map - all of which were probably part of the Silkstone Main catchment area. Pilley Hills coal and ironstone is probably part of the group, too.
It is always difficult to pin down an actual shaft location and a corresponding name. The names changed from time to time with change of ownership, new shafts, the name the locals gave it. I have some mines that have had at least five names at different times and sometimes dozens of shafts spread over a wide area that all belong to one colliery group - e.g. Reevy Hall and Low Moor near Bradford, or the Hunsworth and Brierly Pits complex.
There are literally dozens of pits named after kings, queens, dukes and princes, pubs (Three Nuns, Duke of York), streets, farms, halls, hills and houses, as well as after the mine owner or the owner of the land it was on and many other roots.
It's sometimes a painstaking business finding out which is which - and I haven't located Hall Royd anywhere else than on AN yet, either - but I'm still looking.