However, he was also involved in the use of chlorine gas by the German military.

Have to watch the chlorine gas, but otherwise it's a simple process.

Chlorine gas also takes up any silver which may exist in association with the gold.

Would you rather know exactly how much acid, chlorine gas and so on are within walking distance of your home?

The use of chlorine gas, however, makes only minor gains.

Public water systems usually use chlorine gas as a disinfectant.

At the moment I didn't care whether the equipment could stand up against overheating by chlorine gas or not.

Chlorine gas is an example of a gas that has color.

After that, we shall fill their cave with chlorine gas.

The problem is that I just can't find a way to do that without making chlorine gas.