ExxonMobil Marine Lubricants and the Greek Group, a collection of likeminded Greek shipping families, celebrated a 50-year business partnership this summer, representing the oil company’s longest-running supply agreement with a Marine customer organization. The Greek Group was established in 1961 when nine shipping family companies formed a fuel and lubricants purchasing group with Mobil Bunker Ltd., London. The original companies, organised as the Prometheus Group, were mainly from the island of Chios in the eastern Aegean sea and had settled in London during World War II.