Note the bell and the early form of cable trunking leading to it. I guess that the bell would have rung to warn pedestrians/drivers of approaching trains when the box was switched out.
Note the oval "S" sign, and the diamond "T" sign hung out by the signalman just below window cill level to tell the signal and telegraph technicians that their presence would be appreciated at the box.
In the GWR Timetable Appendices dated 1st October 1945 until further notice, the box was open from 6.00am to 10.00pm Monday to Saturday; closed Sundays.
We are very lucky in Cornwall to still have lots of mechanical signalling and several signal boxes. In fact there are 9 boxes. The oldest box (Par) is 136 years old; the youngest box (Penzance) is 77 years old; and the average age is 111 years..
Going back to Wheal Busy it was one of a large number of signal boxes in the Camborne - Redruth area which were very close together. Its just seven and a half miles from Chacewater Station to Camborne Station, and yet there were more boxes in that 7 mile length than there are now to serve the whole of Cornwall. Amazing. A very interesting note for which many thanks Mike.