第8章 Pressure Drop

The ground failed eleven days later, at twenty past four in the afternoon, and it failed in the way she had feared it would fail, which did not make the sound of it any easier to hear. She was in the survey office, drafting the imaging request she had already been told would be denied, when the floor gave a small, distinct tremor, the kind that came up through your boots and stopped at your knees and left you certain you had felt nothing until the alarms told you otherwise. Then the alarms told her otherwise. The voice on the site channel was calm and kept being calm, which was the worst kind. *K-7 south, subsidence, rig down, one crew member unaccounted. All non-essential personnel clear the corridor. Med team to the eastern pad.* Delyth was already moving. She had a surveyor's clearance for the corridor and she used it, and she arrived at K-7 to find a column of dust standing in the cold air like something solid, and Rig Tern leaning at five degrees off true, its mast folded and its cables slack, and the ground around borehole four dropped by half a meter in a circle that had no business being there. It was her borehole. The one she had drilled twelve days earlier, to prove a point about a model. She stood at the edge of the sag and looked down into a shaft that had been vertical when she logged it and was now a bent, broken throat with its casing peeled back like the skin of a fruit, and she felt the specific nausea of a person watching the ground confirm her worst calculation. The roof of the cavity had taken the weight of everything the company had pumped into it, and the roof had been a roof for a very long time, and roofs get tired. She had told them the void was there. She had filed it, and the file had been struck through, and the man at the bottom of the hole was the price of the strike. "Collar's still shedding," Sabra shouted. "Nobody goes near the lip without a line. Bev, keep him talking, don't let him go quiet." "I never let them go quiet," Bev Ndiaye said, and crouched at the edge with her headlamp angled down the hole, and began, in a voice that was somehow both gentle and completely without pity, to tell the man wedged three meters below that his shift was over and he was being extremely dramatic about the paperwork. Sabra had come off Godwit with the rescue line still coiled on her shoulder and gone straight to her knees at the edge of the sag, mud to the elbows, and Bev had set out her stretcher and her thermal blanket on the flat ground behind her with the quick, angry competence of a woman who had done this before and did not want to be doing it now. "Who's down there?" Delyth said. "One of the night crew," Sabra said without looking up. "He was walking the casing line when it went. Ground just opened under him. He's wedged in the collar, maybe three meters down. We can hear him." "Get him out." "We're trying. The collar's still moving. Every time we pull, it sheds." Sabra looked up at last, and her face was hard and frightened and pointed straight at Delyth. "This is your hole, Amaral." "It's my hole," Delyth said. "I logged it. I logged the void under it. I told them." "Then tell them again, because they're telling everyone on the channel that this is natural subsidence and that the rig tripped the edge of a compaction surface." They got the man out, eventually, with a winch and a brace and an hour of work that left everyone shaking, and he lived, with a broken collarbone and a face full of dust and a story he would tell for the rest of his life. Delyth worked the winch with the rest of them and did not think about anything except the rope, and when it was over she sat on the cold flat ground with her back against a rock and her hands around a cup of something hot that Sabra had put there without asking, and she watched the rescue crew walk the wounded man back toward the dome. He would be fine. He would be on light duties by the end of the week and he would tell the story badly, the way everyone told a story they had not understood, and nowhere in the telling would there be a void, or a survey, or a document, or a man at a desk who had decided that a hole in the ground was a filing error. "Don't," Sabra said, and sat down beside her. "I know the face. That's the face you make before you do something stupid." "It's the face I make when the arithmetic is finished." "The arithmetic is never finished, Amaral. That's why people hate it." Sabra looked at the sagging ground and then at the dome and then, for a long moment, at the eastern ridge. "Go home. Sleep. Whatever you're going to do, do it tomorrow, and do it with a witness, and don't do it in the corridor where a camera can watch you make the face." And when the site channel wrote up the incident that evening, it wrote it up as natural subsidence, and it cited the basin's known lithology, and it did not cite the void, because the void was not in the consolidated data, and the void was not in the consolidated data because someone had spent a decade ensuring it would not be. Delyth went to the lab at midnight and found the door sealed. Not locked. Sealed, with a company plastic band across the jamb and a paper tag with a number and a signature, and the signature was Oskar Fehr's, and the reason printed on the tag was *pending safety review — sector readings quarantined*. She stood in the corridor and looked at the tag for a long time. Her samples were behind that door. Her notebook was in her jacket, but the physical record, the cores, the spill, the seam, all of it sat inside a room she could no longer enter without a signature she would never get. The corridor was empty and quiet, and the lights were on, right on time, and Delyth understood that the company had just taken the only thing she had that a ledger could not argue with, and that she had exactly one move left that did not require anybody's permission. She went home. She sat on the edge of her cot with her jacket across her knees and the memory card inside it, and she thought about a borehole eleven meters deep, dropping into a darkness that had no bottom. She thought about a pale floor seen from a height, like a floor in a dream. She thought about a camera on a cable, and about what an unlogged hole under a colony's water supply might be willing to show to a person who lowered one into it in the dark. She needed a rig she could not requisition, a cable she could not sign out, and a night when nobody would be watching the southern corridor. She had two of the three. The third, she would have to steal. ---