Start with the fault map, lamp checks and a sealed bag of recovered stone chips. It is the source used to make a decision about whether a new side passage can be surveyed without drawing the east crew into an unmeasured seam; it is not the decision itself. The rule only works if the source describes the conditions at the Lantern Fault below the east water gallery.
The latest count is 22 lamp readings taken at the marked stations; the prior file listed 25. A field check has compared the written rule with the place where it is used. The difference is a signal to check, not a verdict about who is right.
The disputed point is practical: The draft suggests an open connection, but the old map records a collapse in the same direction. One side relies on the posted total, while the other points to a warm draft that changes direction just beyond the fourth marker.
The risk of reading the file too broadly is that an entry becomes a conclusion. Dara Vek checked the fault map, lamp checks and a sealed bag of recovered stone chips 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.
Next: The crew will hold the face while a remote lamp is lowered beyond the fourth marker. A useful update will publish the method, exceptions and review date with the number.
