Picture related. I'm not talking tools that have been left in the shed for a year or two and now have a thin sheen of brown on their grey surfaces. I'm talking about [b][u]really[/u][/b] rusted metal like in the picture. Stuff that's been sitting on a beach for several years or even decades while the salty ocean tides have washed over it again and again. Quite a bit of it is magnetic, like old steel nails and iron piping and stuff.
I'm not out to make money, but I'm wondering if any of this can be given to a scrap yard or melted down and recycled?
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Add aluminium powder and make thermite.
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Give yourself tetanus.
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Paperweights?
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Inject it.
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If you collect enough of it you can eventually construct a 1x1 replica of Mars.
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Make art