Miners may encounter dangerous gases like methane as they move underground, too.

They still produce dangerous gas, and must only be used in well-ventilated spaces.

It cannot leak, corrode parts or give off dangerous gases.

"Do you know of any dangerous gas that a ship like the Rigel might store?"

"If this had been about asbestos, or some dangerous gas in the workplace, we wouldn't have any debate."

One favorite: Are the security folks testing to see what a really dangerous gas would do if released over the big city?

The Mayor said the workers were wearing badges that change color to indicate the presence of dangerous gases.

Even if we could provide special enzymes for some of the dangerous gases.

Companies' right to sell dangerous gases is more important than political opportunities to combat the greenhouse effect and climate change.

However the buses were probably the most important source of dangerous to health gases.