Petroleum Development Oman was created in 1925.
Oman's main exports are petroleum, re-exports, fish, metals, textiles.
oman population is 3,311,640 (2008)
There is always a high population of Pakistani workers in Oman, but I think only the Government of Oman would have figures that are anywhere close.
Woodside Petroleum's population is 3,000.
Occidental Petroleum's population is 2,010.
The population of Occidental Petroleum is 11,000.
Hellenic Petroleum's population is 2,010.
The population of Hellenic Petroleum is 5,030.
The population of Saga Petroleum is 1,300.
The population of Saga Petroleum is 1,999.
The population of Hindustan Petroleum is 10.