Ivara dragged a sheet of coarse brown wrapping paper across the zinc cutting table. She pushed the empty chicory bowl aside with the blunt wooden stump of her left forearm. From the cold hearth of the kitchen stove she selected a three-inch chunk of charred hazelwood. She tested the carbon point against the nail of her thumb until it produced a dense, greasy black line.
Her single hand moved with clockwork certainty, pinning the stiff paper against the metal edge with her arm stub. Meanwhile, her long, ink-stained fingers snapped straight lines across the fiber. She didn’t use a flat ruler. Seven years of laying survey chains across broken river shale had trained her eye to divide an inch into thirty-seconds by muscle memory alone.
“Look at the pivot,” she told Len. She gestured with the charred hazelwood at the center of the diagram. “Deren drew the failure point that killed his crew. The discharge governor doesn’t possess a permanent worm drive. To keep the solar release port cracked open, the worker must hold two opposing cast-iron handles against the balance weight while standing on an iron narrow high walkway that vibrates like a rail truck on broken turnouts. If the worker’s grip slips or a wrist gives way, the handle doesn’t stop. It spins backward under twelve hundred pounds of spring tension, shearing off anything in its radius of rotation.”
