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No. of Recommendations: 5
In the workplace, it’s also considered a hazard, and the permissible exposure limit to the metal is 5mg per square meter over an 8-hour work day.

Well, I think that's more about the dust.
A block of it is extremely inert.

The lead in one car battery is enough to kill the large fraction of a typical city.
So long as it stays in one place it's not a problem : )

More realistically, who's going to sell you a couple of tonnes of tanatalum?
Cool colour, though.
Maybe you could line the walls with it.

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