DOW-UAP-D017, UAP Reported at Sandia Base, 1948-1950

A January 6, 1949 guard reported a bright diamond-shaped light near a C-97 aircraft, estimated at 1,500 to 2,000 feet altitude and faster than low-flying jets.

500 feet, horizontal to the carth's surface, before he lost sight of it. Pfc. Everitt was unable to estimate the speed of the object but stated that he has seen low flying jet planes, and that this object travelled much faster than the jets that

A February 16, 1949 Project Grudge conference treated the green fireball issue as classified military SECRET under USAF Air Materiel Command T-2.

had been classified military SECRET under the name, Project “Grudge“, and that the investigation was now the primary responsibility of USAF, Air Materiel Command

The OSI summary relied on reports from scientists, OSI agents, airline pilots, military pilots, Los Alamos security inspectors, military personnel, and other observers whose reliability was not questioned.

Observers included scientists, special agents, airline pilots, military pilots, Los Alamos security inspectors, military personnel, and others whose reliability was not questioned.

Los Alamos conferences in 1949 concluded the green fireball phenomena existed and should be studied scientifically until satisfactorily explained.

to the origin of tho green fireballs, It was, however, generally concluded that the pheno mena existed and that they should be studied scientifically wmtil these occurrences have been satisfactorily explained. Further, that tho continued occurrence of unexplained phenomena of

LaPaz reported that no fragments had been recovered from the January 30, 1949 green fireball.

fireball of January 30th, 1949, shows several other features (eege nearly horizontal path, absence of lons enduring age acd train or dui: clouds, North to South direction, otc) characteristic of the green

The Socorro sampling equipment processed air at about 34 liters per minute and collected about 90 percent of particles larger than one micron.

state that the equipment processed air at the rate of about 34 liters per minute, the particles being separated from the air by impactment against an adhesive-coated plate in an air jet. Approximately ninety per cent of airborne particles with diameters greater than one micron

A preliminary particle report examined 18 collections from nine locations and found no widespread significant dispersion of copper-bearing particles.

they serve their purpose. We have made a preliminary examination of the sighteen collections taken at nine locations on my. Monday-Tuesday trip. There was a larce number of copper=bearing particles on

Edward Teller argued that a material object traveling around 8 miles per second at 8 to 10 miles altitude should have produced an audible shock wave.

miles per second would produce a loud noise easily audible ten kilometers from the source. No sound has been observed. Therefore, Mr. Teller has the tentative opinion they are not material objects passing through the air. We should look to

The December 12, 1948 green fireball was reduced to a nearly horizontal 25-mile path at roughly 8 to 10 miles altitude.

horizontal path with a length of very nearly twenty-five (25) miles at an altitude

LaPaz analysis of the Datil photograph ruled out the moon, Venus or another planet, and a bright fixed star as explanations.

object seen by Stanfield was not the moon (for the angular diameter is too small), it was not Venus or any other planet (for the angular diameter was too large), and it was not a bright fixed star slightly out of focus (for the observed

The green fireball time distribution peaked around 2030 local time, unlike the ordinary meteor maximum near 0300 local time.

1 above, The graph of local time which accompanies the present report shows frequency of sighting of green fireballs (occurring at approximately 2030) coincides in time with neither the freauency maximum for ordinary meteors (occurring at approximately 0300) nor the

Camp Hood observers logged multiple unusual lights, including a green cluster and reddish or white lights, before a planned observation operation began.

observation of observers who had previously reported the phenomena observed on 6-7-8 March 1919 and heretofore reported in Summary of Information, this headquarters, dated 17 March 191,9, subjects "Unusual Lights.” However, before this operation could be begun, the series of 8 umusual "lights" appeared.

The first July 25, 1949 Socorro air sample contained several large particles that tested positive for copper.

first one described above. <A number of the runs were for periods longer than three minutes, but the counts have, in these cases, been reduced to the threeeminute equivalent. One collection showing several large copper indications, teken July 25, is

The July 24, 1949 Socorro fireball prompted airborne-particle collection beginning about 13.5 hours after the event.

made dust collections on the Gampus at Socorro on the morning of July 25. These collections, to Dr. Crogier’s evident surprise, were found to contain not only the first copper particles he

A July 26, 1949 Socorro sample included three apparently spherical 12-micron particles that reacted strongly for cobalt.

COBALT AND in the 2:00 pem, collection of July 26, three quite remarkable particles were found that gave very strong cobalt indieations. The particles were apparently per- fect spheres (at least they were perfectly circular in cross section), twelve mic- rons in diameter. The

LaPaz listed horizontal paths, low apparent heights, high but sub-meteor velocities, lack of noise, and instant full brightness as ways green fireballs differed from typical meteors.

20, the writer listed ten significant differences between the bright green horizon- tally-moving fireballs observed in the interval 1948, December 5-20, and typical meteors. These differences were the following: (1) The horizontal nature of the paths of most of the December fireballs is most unusual.

The April 1949 OSI summary reported no natural or man-made object had been determined responsible for the listed incidents.

more are pr reported incidents has any natural or manemade objec be responsible. Ss es t We WS 3- The body of this summary

December 13 and December 20 incidents described red lights trailing green fireballs and maintaining constant relative positions.

incidents is that the two red lights trailing the green fireball. In each case a constant position with

The December 30, 1948 fireball projected to pass about six miles north of Los Alamos and made no sound despite low altitude.

projection of E are o7' N, 106° 23 W. The forward oxtension of the fireball's tracc on as determined by the above projections, passes some six miles to tho the town of Los Alamos. It should be noted that the descending branch of the path

LaPaz later concluded that most green fireballs were unusual meteorite falls, while a minority could be U.S. guided missiles under test.

unusual, but certainly not of im} ose wrong in interpretin certainlv intensive, Should not be delaved un’ year. Recent internatic imperative necessity of eal green fireballs, i case you are i proving that they are not U. 5. missiles, tre