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Comment by userbinator

In all tests, the fire, propelled by the oxygen leak, produced a terrifying “blowtorch” effect, and the flames were literally white-hot.

Sufficient concentrations of oxygen can cause even steel to burn: https://en.wikipedia.org/wiki/Thermal_lance

There must be a reason they use pure oxygen, as regular compressed air, also breathable, would not have the same intense reactivity.

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