What kind of industrial gasses do you have on hand?
The carbon could be buried, the oxygen released back into the air or sold as an industrial gas, whatever.
This should not be confused with industrial gases, where a yellow shoulder means chlorine.
The companies are two of the world's leading producers of industrial gases.
He is especially optimistic about suppliers of industrial gases.
The report saw more risk from substances already in wide use, like chlorine, an industrial gas that is highly toxic.
"If you believe in things like fuel cells, industrial gases will play a big part in that," he said.
The company later expanded its product range to cover a broad spectrum of other industrial and medical gases.
Hydrogen is at least a global commodity: 50 million tons of this industrial gas are produced every year around the world.
Oxygen is the most common element in the earths crust and the second largest industrial gas.