1.   The authorities said a construction crew laying fiber-optic cable accidentally ruptured the line, releasing gas into the air.

2.   The cluster of tornadoes that ripped through the Oklahoma City area downed phone lines, ruptured natural gas lines and scattered utility poles.

3.   The tornadoes caused widespread blackouts and ruptured natural gas lines, raising the specter of deadly fires and hampering rescue efforts.

4.   Throughout the Oklahoma City area, cars were tossed about and crushed, natural gas lines were ruptured and utility poles were shredded into kindling.

5.   Government and steel plant officials told reporters in the Slovak capital that a gas line exploded during routine repairs early Friday, rupturing another line carrying the carbon monoxide.

6.   Government and steel plant officials said a gas line exploded during routine repairs early Friday, rupturing another line carrying the carbon monoxide.

7.   However, authorities were investigating on Tuesday whether the quake may have ruptured a gas line, sparking a fire that destroyed a home in San Jose.