Chevron Nigeria facilities 'grounded' by attack: source

YENAGOA, Nigeria (Reuters) - Chevron's onshore activities in Nigeria's Niger Delta have been shut down by a militant attack on an electricity power line leading to its Escravos terminal, a company source said on Thursday. "It is a crude line which means all activities in Chevron are grounded," the source told Reuters. (Reporting by Tife Owolabi; Editing by Ed Cropley)