(WSLS 10) - The trial for a deadly mine explosion in West Virginia continues Friday.
Former Massey Energy Safety Executive William Ross testified for a third straight day on Thursday in the trial of former CEO Don Blankenship.
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He testified that no one from a Massey Energy mine in southern West Virginia attended safety training sessions he conducted for the company.
The Upper Big Branch mine exploded in April 2010.
Blankenship is charged with conspiring to break safety laws at the time - and lying to financial regulators.