Elliot Smith[71] claims that "the full story of the coming of copper, complete in every detail and circumstance, written in a simple and convincing fashion that he who runs may read," has been displayed in Egypt ever since the year 1894, though the full significance of the evidence was not recognised until Reisner called attention to the record of pre-dynastic graves in Upper Egypt when superintending the excavations at Naga-ed-der in 1908[72]. These excavations revealed the indigenous civilisation of the ancient Egyptians and, according to Elliot Smith, dispose of the idea hitherto held by most archaeologists that Egypt owed her knowledge of metals to Babylonia or some other Asiatic source, where copper, and possibly also bronze, may be traced back to the fourth millennium B.C. There was doubtless intercourse between the civilisations of Egypt and Babylonia but "Reisner has revealed the complete absence of any evidence to show or even to suggest that the language, the mode of writing, the knowledge of copper ... were imported" (p. 34). Elliot Smith justly claims (p. 6) that in no other country has a similarly complete history of the discovery and the evolution of the working of copper been revealed, but until equally exhaustive excavations have been undertaken on contemporary or earlier sites in Sumer and Elam, the question cannot be regarded as settled. The work of J. de Morgan at Susa[73] (1907-8) shows the extreme antiquity of the Copper Age in ancient Elam, even if his estimate of 5000 B.C. is regarded as a millennium too early[74]. At the base of the mound on the natural soil, beneath 24 meters of archaeological layers, were the remains of a town and a necropolis consisting of about 1000 tombs. Those of the men contained copper axes of primitive type; those of the women, little vases of paint, together with discs of polished copper to serve as mirrors. At Fara, excavations by Koldewey in 1902, and by Andrae and Noeldeke in 1903 on the site of Shuruppak (the home of the Babylonian Noah) in the valley of the Lower Euphrates, revealed graves attributed to the prehistoric Sumerians, containing copper spear heads, axes and drinking vessels[75].