A decision on the south ventilation line should be judged by what happens at the South Ventilation Line beside the old ore pass. The docket is at step 7 of the current review. Its latest entry reads: The affected crew has tried the revised procedure under ordinary working conditions. A rule that looks complete in the chamber can still leave the people who use it carrying an unmeasured cost.
60 air checks entered per shift were entered this cycle, compared with 56 in the prior file. That comparison matters because the public summary counts entries. The open question is whether the new fan can support an added working face without weakening the old return route.
The mill’s output plan assumes the new fan runs at full power; mechanics note that the return door still sticks on cold starts. The current record does not settle that disagreement. The objection deserves a direct answer, but it is not a reason to make the rule permanent before the affected residents can check the method.
Dara Vek checked the fan register and the handwritten checks at each junction against the field notes. The method is to start at the shift handoff, where an official total can lose its context; it confirms the entries, but not every interpretation attached to them. The practical evidence is a canvas test strip that catches the draft at the last occupied junction; any new measure should record that condition beside the total.
The chamber should approve a limited trial with a published end date, a way to record exceptions and a named reviewer. A loaded test will be repeated with the return door fitted to its replacement hinge. That is the narrowest decision that can be defended from the evidence now available.
