McConnell et al. 2018, 'Lead pollution recorded in Greenland ice indicates European emissions tracked plagues, wars, and imperial expansion during antiquity', PNAS 115(22)

Cited in the triage of conjecture 'Ice-core money supply' (slug: cj-001-ice-core-money-supply), verdict=leaked -- this connection already exists in the literature. Citation note: Explicitly links ice-core lead to denarius fineness events Triage rationale: The core join — Greenland ice-core lead deposition as a proxy for Roman silver production, explicitly co-moving with denarius debasement — is famous published work: McConnell et al. 2018 tie lead-flux drops to the 64 CE debasement and the 3rd-century debasement nadir. The harvest's refinement (lead flux LEADING papyrological price inflation by ~a decade) was not located as tested, but the connection itself is established literature, chosen deliberately as a triage calibration item.