BP oil rig explosion: Technician 'on cigarette break missed warning signs'

A panel investigating the explosion that killed 11 men and led to the massive Gulf of Mexico oil spill heard on Tuesday that Joseph E Keith, a senior unit manager for Halliburton’s Sperry subsidiary, left his post for 10 minutes on the night of the April 20 accident.
While he was away from his monitors, pressure data indicated the well was filling with a mixture of explosive gas and oil, according to evidence entered at the joint Coast Guard-Interior Department panel in Houston. Mr Keith told the panel that had he seen the data he would have alerted colleagues to the danger. However, by the time he returned from smoking half a cigarette the gauges had returned to normal.
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Source: The Telegraph