The prospectors comb Right across the Topps to the foot of Grey Screes and back again. Strip by strip .... like lawn-mowing (PP10)
Squashy Hat is above the prospectors on the steep slopes of Grey Screes while they comb High Topps (PP12), and suddenly they realise that the white paint spots with which he has marked appearances of gosson on the slope are like leading lights .... pointing exactly here or to the Gulch (PP22). This is because the occurences of Gosson or decomposed ore are all from one crack going down the slope to the mine. Captain Flint tells Dick that gosson is Decomposed ore. No good in itself but a sign of good stuff lower down (PP28,35).