Analysts cite reports that the National Union of Mineworkers has called upon its members at the state-owned energy provider Eskom toprepare for a strike.
ONEMI, the Chilean National Emergency Office, has been in close contact with the seismologists, trying toprepare for a future earthquake that could strike anytime.
The motion instructs the union's leaders to"prepare to ballot members for a national one-day strike in co-operation with other teachers' organisations and public sector unions".