President Andres Manuel Lopez Obrador said investigations into those responsible for the mine's safety will come only after the rescue effort.

They became trapped on Wednesday after three wells at the coal mine overflowed, causing an inner wall to collapse.

Final tests results indicate a metallurgical recovery of 91% over the life of the open pit gold mine in Nicaragua.

Some 92 soldiers were working at the scene, as well as specialists and rescue dogs.

The best result was an intercept of 295.5 metres at 234 g/t silver, 6.36% lead and 5.72% zinc.

Australia’s Commonwealth Scientific Industrial Research Organisation to create a framework for the development of an ecosystem-based management and monitoring plan.