Documents / Report

UAP Reported at Sandia Base, 1948-1950

U.S. Department of War · 1948 · 116 pages · text by GLM-OCR

This U.S. Department of War release compiles 1949 records tied to Sandia Base, New Mexico. It includes a Sandia Base security inspection reply and a W. D. Crozier letter to Lincoln LaPaz. It also contains Crozier and Seely's report on collecting airborne copper particles after the July 24, 1949 fireball near Socorro, which they judged negative or inconclusive. LaPaz's sixth report on green fireballs disputes parts of that finding, and a Fourth Army report describes unusual lights around the Q Area at Camp Hood, Texas, in March 1949.

From the source:Release of 2026-05-22 Incident: 1948-1950, New Mexico. This file contains 116 pages of documentation from the Armed Forces Special Weapons Program (AFSWP) – the direct, post-World War II successor to the Manhattan Project – and from the U.S. Air Force – relating to a series of sightings and investigations in Sandia, New Mexico, from 1948-1950. This file contains 209 sightings of “green orbs,” “discs,” and “fireballs” reported near the military base. Witnesses reported unidentified anomalous phenomena (UAP) maneuvering, flying out of sight, disappearing, or exploding. The documents also include the results of contemporary investigations into residual copper powder found in some areas where sightings were reported. A few of these investigations became the basis for Project Grudge, which collected reports of unidentified flying objects from various other military installations – also included in this collection.

  • p. 5 …passed over the general neighborhood of Socorro, New Mexico, at 8:26 p.m., July 24…
  • p. 10 …Crozier at New Mexico Proving Grounds while working on saboted and proximity fused shells and knew…
  • p. 11 …staff car and driven out through San Antonio, Carthage, and Bingham, New Mexico (this route passing…
  • p. 49 …152 27 Nov 1749 1 R Socorro, New Mexico E to W 100°-400° above horizon…

Read from the scan by GLM-OCR; expect the odd misread word.

Summary of Sightings of Unknown Aerial Phenomena, 17th District OSI (cont)

Number	Date	Time	Number of Observers	*Reliability of Observers	General Area of Occurrence	Apparent Direction of Flight	Apparent Altitude	Course Horizontal to Vertical	Color	Train or Trail	Duration of Observation	Sound	Shape	Apparent Size	Apparent Speed	Manner of Disappearance	**Evaluation
174	1950/24 Feb	1400	1	R	Albuquerque, New Mexico	E by SE	About 20° above horizon Bright white	None	20-30 secs	None	Round	Compared w/size of weather balloon as it disappeared in distance	Very slow	Faded out of sight	(2)
175***	24 Feb	1930	1	R	Datil, New Mexico	NW White changing to red & green	Yes	2 hrs 30 mts	None	Round 1° per 2 mts.	Disappeared	(1)(2)
176	24 Feb	1345	1	Unk	Los Alamos, New Mexico	E then turned W	25,000-30,000'	Straight up	White, kept flashing like mirror in sun	None	20 mts	None Very fast	Went straight up out of sight	(2)
177	24 Feb	1340	1	Unk	Los Alamos, New Mexico	E to W to E then st. up	30,000'	Straight up	Silvery white	None	20 mts	None Went straight up out of sight	(2)
178	24 Feb	1315	1	R	Los Alamos, New Mexico	Erratic generally NE	20,000-30,000' Silvery	None	15 mts	None	Saucer-shaped	100' across if at 20,000-30,000'	As fast or faster than sound	Disappeared	(2)

***Sec attached photograph.

CONFIDENTIAL

Cases discussed

About this file

Report, from the pursue collection. The PDF is mirrored here; the original link is above. The text was read from the page images by GLM-OCR; expect the odd misread word. 116 pages are in the text index: search them above, or from the library's search.