A Western Canadian Coal Mine in Operation

Not postally used but with the message:

"Don't know whether you have had these cards before. Am busy this week but hope to write long letter next week. Hope you are all well. I am A1 - OK Fine. [last line in very large lettering]

This is by Rumsey & Co, in their Canadian West Series, No. 2 (30 subjects).

I've seen a copy of an RPPC of this exact image and the coal mine is identified there as the Galt Coal Mine No. 3 at Lethbridge, Alta.