The tune is also used for a a song I learned in Missoula, Montana 40 years ago, called THE BUTTE MINERS SONG.
Here's a link to my recording of it;
My Sweetheart;s A Mule In The Mines/ The Butte Miners Song
I learned it from Jay Rummel, and it was written by a Butte miner named Jim Gallagher.
Mark Ross