This is a much more recent photograph that was taken on my drive into Wales a couple of weeks ago. This statue or memorial didn’t have an information plaque nearby, but it clearly shows mining tools. In the top right of the stone it says “Chirk Castle Lime & Stone Company” and in the middle under the person is written “Ganada Bill”.
The figure is ‘Canada Bill’, a local man from Froncysyllte who apparently had a Canadian wife.