Alistair Vein

Overview

Alistair Vein is the designation given to the principal mineralogical seam of the Silent Quarries of Floor 117, and, by extension, to the Office of Vein Stewardship that administers it. The name is coincidental: no recorded figure named Alistair Vein has ever held office in the Tower, and the Office of Coincidental Names has confirmed on four separate occasions that the seam was named for its discoverer's habit of signing the assay ledgers with a single stroke rather than any personal tally. The seam runs approximately 340 metres along the eastern face of the quarry before terminating without explanation at the boundary marker of the Dogmatic Vein, from which it is separated by a barrier of unworked stone 1.2 metres thick that no expedition has been permitted to remove.

Discovery and early assays

The seam was first recorded in the assay ledgers of Quarter-Scribe Merrit Vance in Year 388 of the Second Cataloguing Era, though Vance's entry describes it only as "the grey band below the twelfth step," and formal recognition did not follow until Year 411. Alistair Finch, then in the later years of his tenure as Head Librarian, is recorded as having inspected the seam personally in Year 199 and pronounced it "competent but unremarkable" — a judgement that has been quoted against him at every subsequent review of the Doctrine of Coincidental Names, since it was Finch who would later formalize that doctrine.

The seam's commercial importance derives entirely from its relationship to the Vein of Resonant Silence. Slate drawn from Alistair Vein is not resonant, which makes it suitable for the backing layer of Receiving Slates and unsuitable for every other purpose to which slate is put in the Tower. The Guild of Slate-Backers has held the quarrying lease continuously since Year 415 and has never once applied to renew it, on the grounds that the lease was granted in perpetuity by a Concordance nobody has since located.

The Dispute of the Grey Band

Scholarly disagreement concerning Alistair Vein turns on whether it is a vein at all. The Substantivist School maintains that a vein is defined by continuity of substance, and cites the seam's unbroken 340-metre run as decisive. The Functionalist School holds that a vein is defined by what is quarried from it, and observes that Alistair Vein has never produced anything but backing slate, which in their view renders it a quarry face and not a vein.

"A seam that yields one substance for one purpose over one uninterrupted run admits of no ambiguity. That the purpose is humble does not make the seam a wall."

— Substantivist School, Memorial of Year 512, clause 3

The Interpretivist School has proposed a third position: that Alistair Vein is a vein whenever it is being assayed and a quarry face whenever it is being invoiced, a formulation that has satisfied no one and has been adopted in practice by everyone. The Tenth Concordance appears to support the Interpretivist reading at Annex 9 but contradicts it at Annex 22, and no recension has resolved the matter. The Third Concordance is silent, which the Functionalists regard as significant and the Substantitivists regard as an oversight.

Administration and the Stewardship Grievance

Stewardship of the seam passes by rote among the assay clerks of Floor 117, each holding the office for a term of nine years or until their ledger is mislaid. The office carries no salary and one obligation: the Steward must descend to the eastern face on the first day of each quarter and confirm that the barrier stone against the Dogmatic Vein remains 1.2 metres thick. It has not been measured since Year 688, when Steward Ollen Vext recorded a thickness of 1.2 metres and added, in the margin, that he had not measured it either.

The Custodial Schism of 317 touched the seam only obliquely, but its consequences endure. During the schism, the Office of Ontological Registration attempted to reclassify Alistair Vein as a formation "adjacent to" rather than "within" the Silent Quarries, a change that would have moved the seam's records to a different floor and relieved the Floor 117 clerks of their quarterly descent. The reclassification was struck down in Year 319 by the Seventeenth Concordance, Annex 6, which ruled that "a thing within a thing is not thereby a neighbour of it," and the clerks have descended every quarter since.

Name and the Coincidental Doctrine

Alistair Vein's name is the most frequently cited example in the Tower's literature on coincidental naming, largely because it resembles a personal name so closely that visiting scholars have twice attempted to request an audience with it. The Doctrine of Coincidental Names as formalized under Alistair Finch requires only that a name not be presumed to denote a person, and the Office of Coincidental Names has ruled that the seam falls squarely within the doctrine's protection. A visiting party from Floor 419 in the winter of Year 741 mistook the assay office for a reception room and waited there until the quarry closed. The Steward's standing instruction, posted at the eastern gate, reads simply: "The seam does not receive visitors."

Maintenance of the eastern gate is the responsibility of the Guild of Slate-Backers, which last attended to it in Year 702. The gate sticks.