AstroForge's own December 2023 congressional testimony describes its general asteroid-mining mechanism as electromagnetic docking, laser ablation, mass-spectrometry separation, and magnetic collection

AstroForge's written testimony submitted to the U.S. House Committee on Natural Resources ("The Mineral Supply Chain and the New Space Race," Dec. 27 2023) gives the company's own description of its mining approach in an official government-record document — Tier 1 per the sourcing rubric's "government documents in their primary form."

Docking/anchoring: "AstroForge aims to dock with these asteroids, which are primarily composed of iron, using electromagnets" (p. 3). In-situ extraction: "This process includes laser ablation, mass separation using mass spectrometry, and magnetic collection of the refined metals" (p. 3). This is more precise than claim-astroforge-mtype-asteroid-pgm-startup's earlier description — "magnetic anchoring... high-power-laser vaporization... in-situ refining to ~60% purity," itself a paraphrase relayed through the arXiv paper's own reading of AstroForge's website and podcast appearances. The company's direct words to Congress specify mass spectrometry as the separation step, not bare magnetic separation.

This testimony describes AstroForge's general, company-wide mining approach as of December 2023 — it predates the DeepSpace-2 name and is not tied to any specific spacecraft's hardware. See claim-astroforge-deepspace-2-payload-is-camera-only: DeepSpace-2 itself carries none of this hardware. Resolves the [unverified-mechanism] flag on claim-astroforge-mtype-asteroid-pgm-startup as a description of the company's approach, not as a DeepSpace-2 technical spec. Answers question-verify-astroforge-mission-and-extraction-method on its mechanism half.