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Iron Experiment - Oct 2015

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One for the archaeologists - a sample pack. The slag on the left is "unhappy" slag. A greenish could, a cluster of small blobs in shape. That is the type of slag that comes from "non-ore" sources (like the clay lining or dirt walls). In the middle is a drop of "happy slag". This black, glassy, very runny slag is iron rich and a natural product of a successful smelt. On the right is cast iron. Much heavier than any of the slags. A sure sign that the smelt is running too hot and in this case coming at about 3.5 hours into the smelt.

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Text © Neil Peterson, 2017
Photographs © Neil Peterson, 2017

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