This is one of the best:

Workingman - RITA MAcNEIL Cape Breton

It's a workingman I am and I've been down underground
And I swear by God if I ever see the sun
Or for any length of time, I can hold it in my mind
I never again will go down underground

At the age of sixteen years, oh he quarreled with his peers
Who vowed they'd see never see another one
In the dark recess of the mines, where you age before your time
And the coal dust lies heavy on your lungs

It's a workingman I am and I've been down underground
And I swear by God if I ever see the sun
Or for any length of time, I can hold it in my mind
I never again will go down underground

At the age of sixty-four, oh he'll greet you at the door
And he'll gently lead you by the arm
Through the dark recess of the mines, he can take you back in time
And he'll tell you of the hardships that were there

It's a workingman I am and I've been down underground
And I swear by God if I ever see the sun
Or for any length of time, I can hold it in my mind
I never again will go down underground

It's a workingman I am and I've been down underground
And I swear by God if I ever see the sun
Or for any length of time, I can hold it in my mind
I never again will go down underground

It's a workingman I am and I've been down underground
And I swear by God if I ever see the sun
Or for any length of time, I can hold it in my mind
I never again will go down underground

No, I never again will go down underground