Use Work and Rothbaum as the controlling pair. Distilled p. 85 may be used as additional secondary corroboration but not for the legal cooperage rule.
Used bourbon barrels routinely enter a secondary maturation supply chain beyond American whiskey, including purchase and reuse for Scotch whisky and reconstruction into other cask formats.
Verified against Work 2014 at local PDF p. 192–193 / printed pp. 190–191 and Rothbaum 2025 at displayed p. 39 / local PDF sheet 106. Distilled was also verified at printed p. 85 / PDF sheet 95; its incorrect white-oak legal wording was excluded.
The evidence establishes a durable secondary-use pattern but does not quantify the entire current global market or imply that every used bourbon barrel is exported or rebuilt.
The cooperage source documents low-cost sale, repair, and international reuse of used bourbon barrels. The later whisky source independently confirms routine Scotch acquisition and reconstruction into hogsheads, supporting a bounded cross-industry supply-chain claim.
Global integrity audit after Batch 038. Promoted from Established ZET-20 because two independent sources, two verified excerpts, and two Ready citations supported the manuscript-usable bounded claim. LOCAL-072 Distilled adds a third verified secondary passage and Ready citation without changing the claim's High confidence or its current-market qualification.
Bourbon Land — source-contribution audit
PDF155–157 adds dated examples of barrel afterlives across drinks, food and other uses. It does not quantify present demand, prices, exports or rebuilding rates. Retain the controlling Work and Rothbaum evidence for the specific international maturation chain.
Other-source evidence and existing claim status retained; this audit does not independently reverify every linked work or published use.