A Sims Pacific Metals spokesman said two diesel locomotives were recently lifted into the Sims yard in South Dunedin by crane, from a siding behind its back fence, and it was the first time the team had been tasked with breaking-down something so large for recycling.
He said the average car took about four minutes to turn into recyclable metal, but the locos were expected to take about two months.
Once they had been stripped of usable parts, they would be dismantled by an excavator with a special "cold cut shear" attachment which can cut through metal up to 8cm thick.
He said the locomotives were from the 1960s and were being used by Hillside workshops for spare parts.
But now that most of the parts had been stripped and the Hillside facility was about to be rebuilt, the locos were being disposed of.
"The motors and the alternators have already been pulled out, and we’ve already split the bogies [the framework that carries the wheelsets].
"The rest will be cut up into pieces about a metre long. Then it will be sent overseas to be recycled."
He said it was the easiest and safest way to strip the locomotives down.
"The question about which would win between a train and an excavator — this excavator would definitely win."
