Most of the place names in and around Timmins go back to the first settlement of the area, early in the last century.
Timmins Museum director-curator Karen Bachmann knows why the Dome Mine was named what it was.

(Timmins Museum: National Exhibition Centre)
“The Dome mine was named particularly because the outcropping of rock and of gold that was the prime discovery site for that was actually shaped like a dome,” she outlines, “and so that’s how everybody referred to it and that just naturally progressed into the name of the mine.”
A few kilometres further west was the Hollinger gold mine
“Hollinger is named for Benny Hollinger,” says Bachmann, “who was the original discoverer of that mine and that discovery of gold.”