SHELL SHELL PIPELINE BRITISH PETROLEUM ARCO ARCO PIPELINE VASTAR RESOURCES ARAMCO EXXON EXXON PIPELINE ESSO CHEVRON OCCIDENTAL MOBIL AMOCO TEXACO

PDVSA ADNOC ECOPETROL STATOIL TRANSCO ENRON TENNECO COASTAL ASAMERA KERR MCGEE MAXUS TOTAL AMERADA HESS QGPC

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