It also just isn't a lot of waste. It sounds like a lot, but consider that the US produces 100 million tons of coal waste per year (2014). Hell, solar has ~30ktons of waste a year (just PV panels). 11ktons over 60 years just is astronomically tiny. That's 138 tons a year, 150x less than solar and 500000x less than coal. They just don't compare.