The dryer foreman came to Mara with a complaint and left with a question.
On day1691, his trays still held material that needed the delayed warm turn. Workers had opened and separated the batch by hand. That had bought time, not finished the drying. The reserve account had paid the extra hours. It could not make wet material remain sound forever.
Mara asked where the dryer’s clean loop took its heat.
He showed her.
The ordinary heater fed a separated circuit. The circuit could receive warmth from another exchanger if the inlet stayed within its range and the flow remained clean. The room did not need mineral return water. It needed heat crossing a sound face.
Outside, Rootwell had more return heat than its current receiving area could comfortably reject.
Inside, a useful demand waited for a safe path to it.
The two facts had been kept on different turn sheets.
