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The oxhides are all brittle “blister copper”, with voids, slag bits, and oxides, created when the oxhides were made in multiple pourings outdoors over wood fires.

Ores of the “reduced type” are sulfides or sulfosalts (chalcocite, chalcopyrite, tetrahedrite), and are not readily identified in outcrops as ores; they require roasting to convert them to oxides, then reduction of the oxides to produce metal.

email: [email protected] his websites: scientific literature has come to the conclusion that the major source of the copper that swept through the European Bronze Age after 2500 BC is unknown.

However, these studies claim that the 10 tons of copper oxhide ingots recovered from the late Bronze Age (1300 BC) Uluburun shipwreck off the coast of Turkey was “extraordinarily pure” (more than 99.5% pure), and that it was not the product of smelting from ore.

He has written two books, and about 25 magazine articles.

He presents Powerpoints frequently about his Museum of the Axeheads of Man / Timeline Library, the Atlantic Copper Trade, Sailing Routes across the Atlantic, and Megalithic sites in Europe and America.

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