This is not a request for the Bob Dylan version of this. This one goes back a lot further and it a work song.

Starts off:

If I'd a known my captain was blind, darling;
If I'd a known my captain was blind, darling
If I'd a known my captain was blind,
well I wouldn't've gone to work till half past nine, darling.

I asked my captain for the time of day, darling ...

Chorus:
It takes rocks and gravel, well
To make a mighty fine road, lordy mama
It take rocks and gravel to make a solid road.

Halifax Three seem to be the only group to have recorded it (according to the Folk Music Index of Recordings), which I find bizarre. It's a cool song.