Engineers in Chile have begun reinforcing the escape shaft through which they are hoping to pull 33 trapped miners to freedom.
Metal tubes are being placed inside the first 100 metres of the shaft to strengthen it.
Once the tubes are in place, the actual rescue is expected to start on Wednesday.
A mining specialist and a doctor will be lowered down the shaft via special capsules. They will assess the trapped men and decide who should be brought up first, based on their physical and mental state.
The miners will then be raised up one by one, each journey lasting an hour in complete darkness.
Along with the families and friends of the trapped miners, the world’s media is out in force to watch the climax of what has turned out to be a gripping story of survival.