The Libyan revolt that ousted Muammar Gaddafi has led to a shake-up of the OPEC member's main industry oil, ushering in a new set of faces, led by newly-appointed oil minister Abdulrahman Ben Yazza.

After eight months of war, they will have to sustain the revival of the North African country's oil industry, which is returning to the international market faster than expected.

Questions remain about the future of Libya's oil sector, with a potential shakeup that would give more power to the oil ministry and carve up the National Oil Corporation's (NOC) responsibilities.

Libya holds Africa's largest oil reserves and was pumping 1.6 million barrels per day before the revolt.

OIL MINISTER ABDULRAHMAN BEN YAZZA

Ben Yazza is a former executive of Italian oil company Eni , the largest foreign oil producer in Libya before the war. He also worked at the state-owned NOC.

Libya's NOC website says Ben Yezza was previously "chairman of the operator's management committee at Eni Oil" and a source at Eni has said Ben Yezza had a consulting job with the company.

One diplomatic source described him as "very competent with a strong personality".

DEPUTY OIL MINISTER OMAR SHAKMAK

Shakmak was a deputy to interim oil minister Ali Tarhouni, and has been responsible for much of the daily operations of the oil ministry whose top priorities have been field security and repairs to oil infrastructure.

NOC CHAIRMAN NURI BERRUIEN

Berruin was appointed as head of the NOC by Libya's executive committee in Benghazi, and moved to Tripoli after Gaddafi was ousted from the capital in August.

He said last month he did not know how long he would stay in his current position, but industry sources suspect he will remain as the country prepares for elections in eight months time.

Berruin previously told Reuters that he planned to take on the high-profile job of representing Libya at the next OPEC meeting in Vienna in December.

His background is petroleum engineering and his past experience includes work for eastern oil firm Arabian Gulf Oil Company (Agoco) and UK-based oil services company Tecnica.

AGOCO CHAIRMAN AHMED MAJBRI

Ahmed Majbri, chairman of the Benghazi-based Arabian Gulf Oil Company (Agoco) replaced Abdel Wanis in February when the Libyan revolt started. This company controls around one quarter of the country's production, most of which is pumped from the eastern fields of Sarir and Mesla. Majbri previously worked in AGOCO's finance department. (Compilrf by Marie-Louise Gumuchian and Emma Farge)