Джанет Эдвардс "Девушка с планеты Земля"

We headed back to our work site after our break, and found team 2 had worked their way down through several more layers of rubble. We took over again, and team 2 went happily off on their break.
Progress continued steadily. Just after team 2 rejoined us, we reached what appeared to be solid ground, and Playdon spent a while working on the sensors and deciding where we should place charges. We could place the charges manually this time, rather than using a charge gun, which kept things simple. Playdon called in for clearance, he fired the charges, and a huge circular crater appeared in the ground.
‘I think we’re through to the subway,’ said Playdon. ‘Tag support and heavy lift sleds will need to move closer and use the hoist extensions so we can have beams working vertically down the hole. Team 2, we need your tag support sled over here as well.’
There was a delay while Playdon went round the lift and tag support sleds, checking the hoist extensions were set correctly. I took my chance to do a bit of watching and listening, since I’d never used a hoist extension.
‘Team 2 tag support, you’ll be lowering the sensor probe into the hole,’ said Playdon. ‘It has glows, vid, and sensors, so we get to see what’s down there. Sensor probes are expensive, and unfortunately are easily damaged, so treat it just as carefully as if it was your tag leader. Pull it out fast if anything nasty happens.’
The sensor probe went down and Playdon projected the image from it above the crater, so we could all see. Even with the glows, it was still a bit gloomy down the hole. There was a heap of rubble at the bottom obviously, and a tunnel went off at either side into darkness. Playdon sent a beam of light first one way, and then the other.