McG, There was also a quarry out past Colston before Bishopbriggs. Whinstone was worked throughout the area where it appeared on the surface & Queen Street station occupies a former quarry, there were sandstone quarries along the line north of George street dating from mediaeval times. The stone for Glasgow cathedral came from there & the hill above the cathedral itself, the Necropolis, was quarried for whinstone. The cream coloured sandstone for the tenements was from Giffnock.
It may be that your man worked on railway cuttings & tunnels rather than a quarry as such. Check the sides of the line coming out of Queen Street to Springburn from the train. Hard graft!
Skoosh.
