In most forms of water injection, water is mixed with a combustible fuel and not injected directly from the tap.

Unlike almost every other combustible fuel, hydrogen does not produce carbon dioxide, which is blamed for contributing to the greenhouse effect and global warming.

Discharge occurred "through" vehicle, however it did not affect instrumentation or ignite the rocket's highly combustible fuel.

Catalytic heaters generate flameless heat from a supply of combustible fuel.

More combustible fuels have a lower flash point.

The irony is that ram does little more than encourage growth, which in turn provides nature with additional combustible fuel.

The report also played down safety hazards associated with methanol, saying that all combustible fuels have risks.

Russian oil companies in particular are hoping the Arctic becomes their next Siberia, the main source of Russia's combustible fuel the last 30 years.

May 25, 2011- Scientists explore ways to convert plant sugars into combustible fuels.

These and other refinements were intended to minimize the dangers of carrying the violently combustible fuel.