Alexander Scrap Metal - Scrap Metal Yard in Silverdale, Auckland servicing Warkworth and the wider Rodney region is located in Silverdale, New Zealand on 35 Forge Road. Alexander Scrap Metal - Scrap Metal Yard in Silverdale, Auckland servicing Warkworth and the wider Rodney region is rated 3.9 out of 5 in the category junkyard in New Zealand.