Looking at google earth or flash earth for Thomas's shaft West Wheal Kitty shows a row of terraced houses to the right, very similar to the ones in the original photo, in fact three of the chimneys look spot on spacing wise, on the original picture three chimneys are shown, but in google earth etc four are shown so maybe the fourth chimney and the house pertaining to it were built later, I also noted on the original picture that the tops of the windows on the houses appear to be arched, in google street view for the houses at Thomas's shaft the front of those houses show the windows tops to be arched as well.
Looks convincing to me but I stand to be corrected.
Lozz.