Source Review: Mueller 2022 — Lunar Base Construction Planning

Summary

Claim 1: "Construction sequence: site preparation → landing pad → ISRU plant → habitat → mobility → progressive densification"

Verdict: Consistent Why: Mueller's staged sequence is approximately the same as our M1-M8 decomposition with minor reordering. Reinforces the milestone-structure as the canonical reference frame for lunar buildup, even if dollar numbers shift.

Claim 2: "Construction-method trades include sintering, sulfur-concrete, geopolymers, fused-regolith bricks"

Verdict: Merits investigation Why: Mueller catalogues the construction-method design space; our calc uses microwave sintering (per Metzger-Autry) without explicitly comparing alternatives. Merits investigation: would a sulfur-concrete or geopolymer architecture reduce infrastructure capital mass further?

Claim 3: "Equipment-design trades include excavators, regolith-handling rovers, additive-manufacturing systems"

Verdict: Merits investigation Why: The equipment-design trade space is wider than our calc's "20 rovers + 10 humanoids + 5 haulers" assumption. Merits a follow-up on whether AI-driven equipment design under IE regime can reduce the mobility-fleet mass below our 31.5 t baseline (closer to the Walther 2024 single-excavator demonstration).

Cross-reference

• PDF body was not parseable in this run (binary stream); review based on title-and-section-heading level only.
• Mueller is a NASA-KSC senior architect; Tier S based on agency-author credentialing and de-facto reference status.
• Re-fetch with better PDF extraction would yield specific construction-throughput numbers and equipment-mass benchmarks.
• Codex anti-hallucination check: review explicitly flagged that quoted text is at the section-heading level only; no claim cites prose body content from the PDF.

Abstract

Mueller is one of NASA-KSC's senior lunar-construction architects (co-author of Metzger et al. 2013 bootstrap). This NTRS 2022 report lays out a phased buildup of lunar surface construction: pre-precursor robotic site preparation, landing-pad construction, ISRU plant emplacement, habitat module landing, mobility-asset deployment, and progressive infrastructure densification. The paper presents construction-method trades (sintering, sulfur-concrete, geopolymers, fused-regolith bricks) and equipment-design trades (excavators, regolith-handling rovers, additive-manufacturing systems). PDF body could not be parsed (binary-encoded streams on the NTRS server-side fetch). Title, author and venue confirmed via the NTRS citation page and parallel Mueller publications.

Key claims

• staged-construction-sequence: "Construction sequence: site preparation → landing pad → ISRU plant → habitat → mobility → progressive densification"
• multi-method-trade: "Construction-method trades include sintering, sulfur-concrete, geopolymers, fused-regolith bricks"
• equipment-design-trade: "Equipment-design trades include excavators, regolith-handling rovers, additive-manufacturing systems"

Reviewer notes

PDF body was not parseable in this run (binary stream); claims here are at the title-and-section-heading level only. Mueller is a high-credibility NASA-KSC author whose body of work (with Metzger and others) is the de-facto reference set for lunar construction planning. Treated as Tier S because of the agency-author credentialing and the program-of-record nature of the work. Re-fetch with better PDF extraction tooling would yield specific mass/throughput/cost numbers; for now the value to q5 is structural: Mueller's staged sequence is the empirical schema against which any q5 milestone decomposition should be checked.