Zero Hedge March 26, 2012: The last time a story of Tungsten-filled gold appeared on the scene was just two years ago, and involved a 500  gram bar of gold full of tungsten, at the W.C. Heraeus foundry, the world's largest metal refiner and fabricator. It also became known that said "gold" bar originated from an unnamed bank. It is now time to rekindle the Tungsten Spirits with a report from ABC…