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Source: CNN Money. Exxon is the second largest company in the US as far as revenues go. However, its revenues have dropped by more than 7 percent from the previous year along with decreased oil production and increasing exploration expenditures.
The Price of Nigerian Oil. Nigeria is one of the world's richest oil and gas zones but is still held back by civil unrest. Fleur Doidge reports. West African nation Nigeria is in the top ten largest oil and gas producers globally and is the largest oil producer in Africa. So it is no surprise that it regularly makes headlines.