For folks who have been forced to undergo surgery and maybe replace certain parts of their body like their hips or knees, the said parts are part of the metal recycling too. So don’t be surprised if technically, there is a “human” touch in some materials or objects which make use of recycled metal.
Depending on how you look at it, the metals originate from crematoriums such as those in Britain, selling to companies and foundries as long as this is with the consent of the bereaved families. The program is entirely voluntary with all profits headed to charity.
The possible destinations for all that metal are as numerous as the number of metallic objects being produced today. Some of the lower-grade stuff goes into road signs, while more valuable, sturdier metals go into aircraft engines.