I've just encountered this post because I am also trying to find the lyrics to "Harvey". Of course, our requests are 11 years apart so you may already have found them. I also learned it during my schooldays in Chester. I know there are another couple of verses but the following is what I remember:
Harvey's in his forties, he's tall and rather thin. You'd know that he's a miner by the bleu scars on his skin,
And he listens with his hands, he listens with his face, he listens with the whole of him at any time or place. For Harvey is a listening man, he'll listen all his days.
In the pit a stone falls; for someone it's the end, And when they think of kinfolk, well, it's Harvey that they send,