Imagine a personal heating system that works indoors as well as outdoors, can be taken anywhere, requires little energy, and is independent of any infrastructure. It exists – and is hundreds of years old.
Agree, in nature most Iron is in form of iron oxideFe2O3 or Fe3O4 i the iron ore. But yes, I don’t think there will be many who take the worn patches to a foundry, but thanks to their nature they are not an environmental problem to throw them away or use them for compost.
Agree, in nature most Iron is in form of iron oxideFe2O3 or Fe3O4 i the iron ore. But yes, I don’t think there will be many who take the worn patches to a foundry, but thanks to their nature they are not an environmental problem to throw them away or use them for compost.