The Li–Torr 'generate gravity in the laboratory' claim traces to a 1992 APS conference abstract and the 1993 Foundations of Physics Letters paper, not the 1991 or 1992 journal papers

fringe-sciencephysicsantigravitysuperconductivitygravitomagnetismning-liprimary-source-verification

A 2010 Defense Intelligence Agency reference document, "The Role of Superconductors in Gravity Research" (DIA-08-1003-013, prepared for the Advanced Aerospace Weapon System Applications Program, written in first person by an experimentalist with direct involvement in Podkletnov-replication attempts), traces a documented escalation distinct from [[claim-ning-li-1991-gravitomagnetic-superconductor-antigravity-proposal|the 1991 Physical Review D paper]] and [[claim-li-torr-1992-prb-paper-is-passive-permeability-model-not-antigravity-claim|the 1992 Physical Review B paper]], neither of which states an active-generator claim. A year after the 1991 paper, Li and Torr presented at an American Physical Society meeting (Bull. Am. Phys. Soc. 37(2), 1992, Session G8 paper 10), part of whose title was "A Theoretical Basis for a Principle of Electrically Induced Gravitation." Per the DIA document, "[t]hey concluded that under certain circumstances, a secondary gravitational field could be induced inside a superconductor and 'provide a basis for the electrical generation of gravitational fields in the laboratory.'" The following year, Li and Torr published "Gravitoelectric-Electric Coupling via Superconductivity" (Foundations of Physics Letters 6(4): 371–383, 1993) — the paper Harris's 1999 formal rebuttal targets, per Harris's own reference list. The documented escalation from "passive response" (1991) to an explicit "generate gravity in the laboratory" framing thus runs through a 1992 conference abstract and the 1993 journal paper — a lower, less-archived bar than either journal article named in the vault's original open question about this claim-family.

This claim-family's whole 1991–1994 arc extends an earlier, unrelated result: Bryce DeWitt's 1966 finding that a time-varying gravitomagnetic field must arise from magnetic flux quantization in superconductors (see entity-bryce-dewitt).