3 ms·Density, conductivity, x-ray. Density alone won't rule out bars that are spiked with tungsten.by bhickey 1y agoDensity, conductivity, x-ray. Density alone won't rule out bars that are spiked with tungsten.amelius 1y agoMaybe also moments of inertia?quchen 1y agoFake with a layer of gold around it has the same moments of inertia.JKCalhoun 1y agoIf the metals were thoroughly combined and met the density equivalent of gold I see no reason why the moment of inertia would not also match that of gold.