3 August 2022 - no waste

There is no such thing as a waste product, only an energy shortage. When you burn wood in your fireplace, you throw away the ash only because you don't have the energy available to gather the ash and combustion products and reconstitute them into wood. When you fuse atoms in your hyper-advanced fusion reactor and throw away the non-fusible iron, it's only because you don't have the energy to think of something fun to build with it.