Crates ( el, Κράτης) or Craterus (Κρατερός) was a

mining Mining is the extraction of valuable minerals or other geological materials from the Earth, usually from an ore body, lode, vein, seam, reef, or placer deposit. The exploitation of these deposits for raw material is based on the economic via ...

(μεταλλευτής ''metalleutes'') and

hydraulic engineer Hydraulic engineering as a sub-discipline of civil engineering is concerned with the flow and conveyance of fluids, principally water and sewage. One feature of these systems is the extensive use of gravity as the motive force to cause the mov ...

, who accompanied

Alexander the Great Alexander III of Macedon ( grc, wikt:Ἀλέξανδρος, Ἀλέξανδρος, Alexandros; 20/21 July 356 BC – 10/11 June 323 BC), commonly known as Alexander the Great, was a king of the Ancient Greece, ancient Greek kingdom of Maced ...

. He was entrusted with draining

Lake Copais Lake Copais, also spelled Kopais or Kopaida ( grc, Κωπαΐς; ell, Κωπαΐδα), was a lake in the centre of Boeotia, Greece, west of Thebes. It was drained in the late 19th century. It is now flat dry land and is still known as Kopaida. ...

in Boeotia and contributed to the construction of

Alexandria Alexandria ( or ; ar, ٱلْإِسْكَنْدَرِيَّةُ ; grc-gre, Αλεξάνδρεια, Alexándria) is the second largest city in Egypt, and the largest city on the Mediterranean coast. Founded in by Alexander the Great, Alexandria ...

. It appears that Crates may have been an Olynthian who settled in the Euboean mother-city,

Chalcis Chalcis ( ; Ancient Greek & Katharevousa: , ) or Chalkida, also spelled Halkida (Modern Greek: , ), is the chief town of the island of Euboea or Evia in Greece, situated on the Euripus Strait at its narrowest point. The name is preserved from ...

, after the destruction of

Olynthus Olynthus ( grc, Ὄλυνθος ''Olynthos'', named for the ὄλυνθος ''olunthos'', "the fruit of the wild fig tree") was an ancient city of Chalcidice Chalkidiki (; el, Χαλκιδική , also spelled Halkidiki, is a peninsula and ...

in 348 BC.

References

*''Who's Who in the Age of Alexander the Great'' by Waldemar Heckel {{authority control 4th-century BC Greek people Engineers of Alexander the Great Ancient Euboeans Ancient Olynthians Ancient Greek engineers