The prime minister said on May 2 that mine managers had been banned from leaving the country.... The road had to be resurfaced and power restored before a full-scale search could begin. Initially, equipment was being carried down on foot, but vehicles were necessary to install machinery capable of pumping water from depths below 500 metres.... Rescuers have pumped out about 55 million litres of floodwater, out of an estimated total of 165 million litres that swept through the underground porti