The gas would have leaked all through the house by the time you got there the following day.

"You could hear the gas leaking, like air was coming out of someplace with too much pressure," he said.

The gas leaked out of the nineteenth floor and killed those two cops.

If enough gas has leaked back into the building, we may die on our way up.

There are many theories about how that gas might have leaked, but the actual cause remains unknown.

It was gas, leaking from underground pipes that led into Manhattan.

The gas leaked from the steam generators, which were opened for inspection.

Because the gas is now leaking and all around people are throwing matches.

Occasionally, we find a spot like this, so airtight that the gas has not leaked away over the years.

Thin gases were leaking from pipes; the general noise level rose with every step closer.