Directions:

Manaccan area.
There are many roads meandering from Helston in the direction of Manaccan; the indicated one through Gweek is as good as any.
Manaccan Church, site of platinum plaque dedicated to Gregor - N50 05.01 W05 07.63.
Tregonwell Mill, site of titanium (ilmenite) discover; plaque - N50 04.83 W05 07.64.
"1" = Intersection of A394 and Gweek Lane - N50 06.77 W05 14.85.
"2" = Gweek - N50 05.77 W05 12.52.
"3" = Mawgan - N50 04.74 W05 12.42.