Nigeria steps up efforts to rescue 300 abducted pupils

Nigerian authorities are stepping up efforts to rescue more than 300 students abducted by armed men who raided their hostels.
All efforts to rescue survivors from the pit have proved futile
Rescue slows a week after Zimbabwe mine collapse
Rain and flooding have slowed down rescue efforts at a Zimbabwean mine where a shaft collapsed last week, trapping at least 10 artisanal miners.