However, geologist Luigi Piccardi of the National Research Council Institute for Geosciences and Georesources, in Florence, who has also studied Delphi, agrees with Etiope that ethylene was probably not the culprit but says more gas sampling needs to be done before the case can be closed on any of the suspects.
Oil and gas are being drilled, refined and sold in increasing amounts by Pemex, the state oil monopoly, but more gas is needed to fuel Mexico's ever-increasing need to power more energy plants.
Since recent spikes in the price of electricity have been blamed on the rising price of gas, the new federal minister for the environment and energy, Josh Frydenberg, indicated more gas was needed in Australia.
"Just when we need more gas, world demand for gas is set to tighten," said Buchanan.
Thanks to the boom in shale gas, America will soon produce more gas than it needs, but selling more of it abroad is resisted by environmentalists and those who fear domestic prices will rise.
It inherited a bunch of "take-or-pay" gas contracts that committed it to buy more gas than it needed at above the market price.
At the same time, while Europe currently has a gas glut, it is expected that in five or six years' time more gas will be needed, both to fuel the new generation of power plants currently being built or ordered and to serve either as a backup supply or an interim resource while renewables are developed.
Do not perform any sudden accelerations - By suddenly accelerating your car, it will burn more gas than is needed.
The plant will be competing with other power, fertilizer and chemical companies that also want and need more gas.
