natural gas *
gas ****

You have cut the cost of the natural gas in half.

About 25 percent of the country's current energy needs are met by natural gas.

Over all, about 23 percent of the nation's energy needs are met by natural gas.

We do not have a big enough store of natural gas.

In the 1930s, it was only the Americans who had natural gas.

It is often found as the main part of natural gas.

Natural gas has been used since 1974 after the first oil crisis.

The Front "should be down on the list of places we get our natural gas from."

Market prices for both oil and natural gas have been higher than those levels since the end of 2002.

The county is also rich in oil and natural gas.