1.   On a hill, the petrol pump is switched on and the gas valve is switched off.

2.   Ahearn and Criter said sensitive information, such as the locations of important water mains and gas valves, was restricted.

3.   Each gas appliance should have an individual gas shutoff valve, and you must know where it is and how to operate it.

4.   Each gas appliance should have an individual gas shutoff valve.

5.   If the burners go out during operation, turn all gas valves to off.

6.   If that is the case, you should replace or repair the gas valve, if it is a gas-fired unit, to control the heat.

7.   Some time later, Mahony said, remote meter readings showed that someone had again illegally turned the gas valve on.

8.   Such failures will throw off electric generators, gas pipeline valves, building security systems and much more, causing a widespread breakdown of equipment.

9.   According to Deptula, rescue workers found disassembled gas valves and tools in the basement, indicating that someone had caused the leak intentionally.

10.   According to Deptula, the rescuers found disassembled gas valves and tools in the basement, indicating that someone had caused the leak intentionally.