Before the use of natural gas or oil for heat, coal was used.

The second German use of gas had made it even worse.

Until the early 2000s, natural gas use in Israel was minimal.

And we will even train your staff in the most efficient use of gas.

With the use of gas, the attempt is being made to kill off a people or at least to break its spirit.

They point out, though, that Iraq might conceal evidence of gas use.

The main difficulty in the use of natural gas is transportation.

It can also control the use of stored gas throughout the region.

And our home heated without the use of electric, gas or oil.

The country makes no significant use of natural gas.