1. The leaded petrol Market is shrinking so fast that some major petroleum companies have discontinued refining leaded petrol. 2. Shell has become a major petroleum producer from the deep waters of the gulf. 3. The major petroleum companies have the most to gain from these developments. 4. Until a deal was set and the legal and tax rules were clear, progress on major petroleum projects was stalled. 5. Norsk Hydro, a major petroleum producer, now says studies have shown the proposal to be economically viable. |