An extract from the 1973 re-signalling special notice from September of that year. This should help you understand where signal PN386 was located. As well as this signal, PN384 & PN385 were also connected with the branch to Padiham. Near PN385 was a "staff" instrument that was carried by the train down the Padiham branch and back. For safety reasons (this now being a single track) no other trains could be on the line at the same time. Without the staff, a signalman could not operate the points onto the branch nor operate the lights for it. When a train returned to Rose Grove the staff was replaced back near PN385.
Extract from David Allen's BR re-signalling special notice 1330G from 1973, and used by kind permission of The Signalling Record Society
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