I'm finding that ingredient list very interesting. Such cool info. But, this recipe is from 1952. I'd expect the recipe will have evolved over time (changing material costs, improvements to manufacturing efficiency. This example recipe may not reflect current clay chip composition... but they also may do too.
Because I only understand metric I calculated the below, hopefully correctly (above posts helped, thanks) Was hoping to see what kind of %s this 1952 recipe creates. This seems to indicate there is very little plastic in these 1952 clay chips. Or am I mistaken, stuffed it up? Maybe the recipe is incomplete?
One problem is it is by weight and not volume. Perhaps someone could add to this by finding out relative densities of material and converting to % by volume.
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