Mark Anson - Below Mercury

‘Not without crawling up here behind us. We’re safe from here on in. Come on.’ Now that the immediate danger was past, Matt was thinking again of the countdown clock, ticking away in the silo.

They climbed up the steep stairway, hanging on to the rail on their left. The narrow steps, and the sides and floor of the duct, were thick with dust brought up from the mine over the years. The duct bored its way upwards and away from the shaft, and finally levelled off at a set of partly open pressure doors, also covered in dust; they were used to balance the bypass airflow. Light flooded through the gap into the darkness of the duct.

They stepped through the doors, and found themselves at the confluence of two major passages. Behind them, to their left, the fresh air from the refinery joined up with the bypass duct, and ahead, a set of three giant fans turned sluggishly in the faint air current from below. Ducting and pipework ran across the walls and roof of the junction, carrying gases from the refinery for correcting the air blend.

They were at the far end of the main return airway, and ahead of them, past the fans, the airway sloped gently upwards, past the silo complex and back under the crater floor to the mine.

‘Come on!’ Matt was jubilant now, and walked forward confidently. Through the walkway to one side of the fans, then a short way up the passage, and they would be at the silos.

The two of them had just passed by a complex junction of gas ducting, when Matt heard the sudden whine of a power pack coming out of standby.

He spun round, and a pair of red eyes flickered on in the shadows by the pipe fittings, and the huge bulk of a mining robot stepped out from where it had been standing, waiting for them.

‘Rick!’ Matt yelled at the top of his voice, but the robot had already reached Bergman, and grabbed him by the neck and body with its pincered hands. Bergman’s eyes bulged, and his legs thrashed as the robot lifted him off his feet and held him above the ground.

Bergman turned his head to look at Matt, his mouth moving as if to say something, and then the robot’s pincer closed round his neck, severing the head from the body in a spray of blood that showered over the robot.

With a whine of motors, it tossed Bergman’s body aside, blood still spurting from the severed neck, and moved towards Matt, its red eyes blazing. It covered the space between them with a terrible speed, and as Matt turned and ran, he felt the deadly swoop of air behind him as the robot just missed him with its claw.

To the side of the fans, a single pressure door allowed access to the maintenance walkway, and Matt just made it inside as another blow from the robot smashed into the frame.

Matt stumbled through the walkway, the robot pounding behind him, thudding off the narrow walls. Its motors whined in overdrive as it strove to catch him and tear him apart, but Matt was faster, and he emerged from the walkway through another pressure door, slamming the door close button behind him.

The robot reached the door just as it was closing. It thrust one hand through the closing gap, then another, and slowly forced the door into reverse, pushing it aside. There was a loud bang and a flash as the door motors burned out, and the door flew back, letting the robot through.

Twenty metres ahead, Matt was beginning to falter; the long climb, the low air pressure, and the shock of what had happened to Bergman, was taking its toll. His legs shook with each stride, as if they were made of rubber, but he knew he had to make it to the silo. He saw Bergman’s head falling from his body, he saw Bergman being tossed aside, and the robot was just behind him now. He was filled with a sudden rage that gave him the strength to keep moving, and open up the gap between him and the robot.

‘If I ever – get out of this alive,’ he hissed between breaths, ‘I will come after you bastards. He had a wife, and a kid – and you fucking killed him – if I get the slightest chance to destroy you – I fucking will, you cock sucking – mother fucking company!’

Suddenly, a sharp left turn opened on the left; the entrance to the silo. The huge roof fall blocked the airway some way ahead, and rocks and boulders were scattered all down the passage.

With his last strength, Matt staggered through the pressure doors in the silo entrance passage. Holding on to the door frame, he slammed the manual door close button, and fumbled for the isolation switch to lock the door against the following robot.

Inside the silo, a fresh rumble reverberated through the corridors; the robots would soon be through the rock fall in the passage outside.

Wilson appeared in the entrance doorway of the shuttlecraft.

‘That’s it, we’re all ready to go. I’m going to load up the bars, then we’ll close the door and be on our way.’

‘We’re not taking them,’ Clare said in a flat voice.

‘What? I asked you earlier and you just said nothing!’ Wilson’s voice showed his anger.

Clare turned round in her seat to face him.

‘I said, we’re not taking them. And before you start yelling at me, lieutenant , just think how it will look, if we come back loaded up with platinum, but with all the passengers dead. Leave them behind. For your career, if nothing else.’ She turned back to the controls. ‘I’m not going to talk about this again.’

Wilson stood in the doorway, considering. For one moment, just one, he thought of what might happen if Foster had an accident. Then there would be no one to tell him what to do.

As quickly as the thought occurred, it evaporated. She was right. If he came back alone, with a cargo of bullion and some story about how everyone else had been killed, he would be up in front of an investigation board before he left the base. No, she was right, he decided. He felt a tide of disappointment wash over him as he hit the button to close the door, and went to join Clare on the flight deck.

‘Pressurising tanks,’ Clare said, reaching out to the controls.

A hiss and rush of helium gas sounded in the shuttle’s pipework, and it creaked beneath them as the gas flowed into the propellant tanks, building up the pressure.

Clare knew she should do a takeoff briefing, but she couldn’t be bothered. Wilson had done the final checks; let him worry about it. Her gaze wandered across the silo to the control room opposite.

Matt stood there, looking back at her.

For one moment, she thought it was her imagination playing some cruel joke on her, but then Matt thumped on the curved window and shouted something.

‘Hold launch!’ she blurted out, and leaped out of her seat. She ran to the door and banged the button to open it. The rumble of falling rock was very loud now. Wilson halted the takeoff sequencer and followed Clare as she raced along the docking corridor and back to the control room.

She rounded the corner – and cannoned into Matt.

The impact nearly knocked her flying, and for a moment, she backed away in shock. Wilson came to a halt behind her. Matt was wide-eyed and panting, shouting words that didn’t make any sense. He grabbed Clare’s arms, his fingers gripping hard in his desperation.

‘We need to lift off! There’s a robot behind me! It killed Rick, and it’s going to kill us! If you don’t get us out of here in the next few minutes, we’re all dead!’

‘I – I thought you were dead,’ she gasped, her eyes betraying everything. Matt released Clare and yelled at Wilson, trying to get him to understand.

‘I’ve closed and locked the pressure doors, but that won’t hold it for long. We need to get out of here, quickly!’

Outside the silo complex, in the main passage, the tunnelling robots broke through the last pile of rock. With a thunderous roar, the remaining air in the mine blasted out through the hole they had made, bursting the rock fall aside. The two robots stood firm in the maelstrom of escaping air and flying rock, and then strode through the widening gap.