The announcement last week of plans to close Bluff’s Tiwai Point aluminium smelter sent shockwaves into the economy with the prospect of the loss of over 1,000 jobs. In today’s visit to the sound archives with Sarah Johnston we will hear how this is in sharp contrast to 50 years ago, when building the new smelter and its associated power station at Lake Manapouri were the country’s biggest-ever construction job, employing hundreds of workers from around the world.