The first east seam notice began with the soundings book and the crew’s pre-entry inspection cards. Since then, the city has moved through a source check, a public hearing and a trial at the East Seam, four galleries below the old cart rail.
The current docket records 37 soundings recorded before entry; the earlier file recorded 33. The count is more specific than the first summary, but still does not answer whether the new iron markers reveal movement early enough to keep crews out of a failing face.
A key point in the timeline was the discovery of a hairline change in the slate above the second timber brace. It narrowed the dispute from a general claim about the rule to a question about how the rule behaves at the site.
The foreman calls the readings a useful warning; the survey office says the marks need a second instrument before they can justify a closure. 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 second set of hands has checked the count and recorded where the methods differ. The entry belongs to the district return file at the East Seam, four galleries below the old cart rail. A second surveyor will repeat the readings from the opposite wall. The next review will show whether the change lasts beyond this docket or returns as another temporary exception.
