1.   Rescuers are working round the clock to find survivors of the blast.

2.   Rescuers were still working their way towards the trapped men.

3.   Rescuers worked through tonnes of rock for more than twelve hours to free the miners.

4.   For that reason, rescuers are working on revolving, four- to five-hour shifts.

5.   Rescuers worked cautiously to find a way to reach the four workers trapped beneath tons of rubble that blocked entrances to the tunnels.

6.   Rescuers work to extract people trapped under the scaffolding.

7.   Sixty rescuers work in each shift.

8.   The rescuers worked like drones but were treated as heroes.

9.   The rescuers worked on a street littered with wreckage, a building turned inside out.

10.   Papavasilopoulos said rescuers were working to free the trapped.