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.

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

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

Page 34

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
184	1950/25 Feb	1545	1	R	Los Alamos, New Mexico	N to SW	Very high White to silver	None	30 secs	None	Circular	About size of 50% piece at its height	Very fast	Disappeared into glare of sun	(3)
185	25 Feb	1550	1	R	Los Alamos, New Mexico	S or SW	12,000' Metallic	None	Few secs	None As large or larger than average plane	Fast	Faded from view	(2)
186	25 Feb	1545 1555	14	R	Los Alamos, New Mexico	NE to SW	Overhead at from 4 to 10 miles	Traveled w/a fluttering motion	Silver	None	Few secs to 2 mts	None	Round	Vary from $\frac{1}{4}^{\circ}$ to small airplane	Very fast 500-1500 mph (2)
187	25 Feb	1655	1	R	Los Alamos, New Mexico	E to W Shiny silvery 10-15 secs	None	Round	About size of B-25 fuselage	Slow speed	Disappeared behind tree	(2)
188	10 Mar	1800 1830	6	Unk	Phoenix, Arizona	SE	40,000-50,000'	Moved upward at 60° angle	Aluminum or quick silver	Yes	10 mts	None	Oval or oblong	Size of moon	Extremely high	Disappeared	(2)
189	5 Mar	1135 1300	4	R	Vaughn, New Mexico	Traveled 195° Straight flight	White	None	1 hr 25 mts	None	Round	Ping pong ball at arm's length	180 to 200 mph	Ceased observation	(2)

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.