11.   They also failed to give specific information, training, instruction or supervision to their sub-contractors in relation to the electrical arrangements for the welding work.

12.   A spark during welding work could have caused the initial explosion, sources said.

13.   Al-Zayda said he is looking for welding work but is willing to accept any job.

14.   They also said the leaked gas exploded simply by shock or was ignited by welding work.

15.   Welding work set fire to a dividing ceiling in the terminal containing the inflammable plastic material, rapidly propagating toxic fumes through the terminal which asphyxiated the victims.

16.   Police said the fire was apparently caused by welding work.

17.   The cause of the fire was not known, but welding work may have been responsible, firefighters said.

18.   The blaze was caused by welding work in a transit area.

19.   The coastguard is to summon the ferry captain to explain why he authorized welding work while at sea, which is prohibited unless under emergency situations, Lista said.

20.   The company in charge of the welding work which caused the fire in the ceiling is already under investigation.