The first south ventilation line notice began with the fan register and the handwritten checks at each junction. Since then, the city has moved through a source check, a public hearing and a trial at the South Ventilation Line beside the old ore pass.
The current docket records 66 air checks entered per shift; the earlier file recorded 67. The count is more specific than the first summary, but still does not answer whether the new fan can support an added working face without weakening the old return route.
A key point in the timeline was the discovery of a canvas test strip that catches the draft at the last occupied junction. It narrowed the dispute from a general claim about the rule to a question about how the rule behaves at the site.
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 parties now share more of the record than they did at the start, though they assign it different weight.
A field check has compared the written rule with the place where it is used. The entry belongs to the open-book review file at the South Ventilation Line beside the old ore pass. A loaded test will be repeated with the return door fitted to its replacement hinge. The next review will show whether the change lasts beyond this docket or returns as another temporary exception.
