In 1981 Roger co-founded aes, which evolved into a Fortune 500 global energy company with assets of $34 billion.
The metal which is most often referred to in the Rigveda next to gold is called ayas (Latin, aes).
So far the words χαλκός and aes may be translated as bronze.
Avium vivae icones, in aes incisae & editae ab Adriano Collardo.
"aes" in the latter should be understood to mean what we would call "the coin," and not necessarily coin of low denomination.
By the Greeks and Romans both the metal and its alloys were indifferently known as χαλκός and aes.
The Tuatha D Danann is used as a collective name for the aes sde.
The aes cut with a chisel were only in currency for a short time, and were withdrawn when the new coins were issued.
In later times, pay was substituted for the aes hordearium, three times as much as that of the infantry.
The Latin name for this metal was aes Brundusinum, or "brass of Brindisi."