Well, I'm quite pleased to have found the lyrics to the tune of "Rosin the Beau" that had been floating in my head. They're copied from "Rise Up Singing," which, unfortunately, does not have a "search" function like we have. Otherwise, I would not have been frustrated for so long. To avoid frustration for others, here are the lyrics:

ACRES OF CLAMS (anti-nuclear)
words: Charlie King, 1977
music: traditional (Rosin the Beau)
(see also: "Old Settler's Song")

I've lived all my life in this country
I love every flower and tree
I expect to live here 'til I'm ninety
It's the nukes that must go and not me.

It's the nukes that must go and not me.
It's the nukes that must go and not me.
I expect to live here 'til I'm ninety
It's the nukes that must go and not me.

I swallowed enough radiation
It's time I was standing my ground
So I'm joining that grand occupation
We're shutting that power plant down

We're shutting that power plant down
We're shutting that power plant down
I'm joining that grand occupation
We're shutting that power plant down

Now Seabrook, New Hampshire's a swell town
It's there that we're taking our stand
Don't sit home and wait for a meltdown
Come fight for your freedom and land

Come fight for your freedom and land
Come fight for your freedom and land
Don't sit home and wait for a meltdown
Come fight for your freedom and land

Now Seabrook is just the beginning
We'll soon have the nukes on the run
It's a fight that the people are winning
the fight for our place in the sun….

We're seizing that land with a vision
Exposing the P.S.C."s shams
As I sing of my happy condition
Surrounded by acres of clams….

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Mudcat's Bob Nelson (Deckman) singing "Old Settler's Song":
http://www.youtube.com/watch?v=m27D4kp5LKE