Just wondering if there is any text anywhere about the practicalities of traditional copper precipitation. All the sites I have seen (Parys Mountain, DGC, Levant) used wide shallow precipitation pits which suggest the ideal conditions would require very slow water movement and large air surface, not ideal in the location shown. I also think the precipitate largely built up on the floor of the pit rather than on the scrap iron, although you obviously do get a deposit on the iron as well. Descriptions I have seen include Henwood (TRGSC 1871) and Parys Mountain agents' reports which I will check when I get a chance.