Hanlon 's song was originally an energy conservation jingle to advertise home insulation , with the proceeds from its release going to charities .
The single Damn the Dam recorded and released in 1973 by John Hanlon has retrospectively become associated with the Save Manapouri Campaign .
John Hanlon 's song was originally an energy conservation jingle to advertise home insulation , with the proceeds from its release going to charities .
The single Damn the Dam recorded and released in 1973 by John Hanlon has retrospectively become associated with the Save Manapouri Campaign .