Vitrification is a proven technique in the disposal and long-term storage of
nuclear waste or other hazardous wastes.[SUP]
[4][/SUP] Waste is mixed with glass-forming chemicals in a melter to form molten glass that then solidifies in canisters, immobilizing the waste. The final waste form resembles
obsidian and is a non-
leaching, durable material that effectively traps the waste inside. The waste can be stored for relatively long periods in this form without concern for
air or
groundwater contamination. Bulk vitrification uses
electrodes to melt soil and wastes where they lay buried. The hardened waste may then be disinterred with less danger of widespread contamination. According to the
Pacific Northwest National Labs, "Vitrification locks dangerous materials into a stable glass form that will last for thousands of years."[SUP]
[5][/SUP]