Jan Mangal, a petroleum adviser to the President of Guyana whose role is funded by the Inter-American Development Bank, has huge experience in the oil sector after a long career with Chevron, and his message to Guyana is a sober one, writes Gareth Chetwynd.
“There is a massive change coming. Most people here do not realise it yet, and we cannot take it for granted that it will work out positively.
