PROJECT BLUE BOOK

1.
PROJECT 10073 RECORD CARD
1. DATE 2. LOCATION 12. CONCLUSIONS
x Was Balloon
10_Apri1_1957 logden, Utah 000 Probably Balloon
3. DATE-TIME GROUP 4. TYPE OF OBSERVATION Possibly Balloon
Local Ground-Visual Ground-Radar Was Aircraft
000 Probably Aircraft
GMT_ 11/0330Z Air-Visual Air-Intercopt Radar Possibly Aircraft
5. PHOTOS 6. SOURCE Was Astronomical
Yes 000 00 Probably Astronomical
XCKNo XDKNo Civilian & Military Possibly Astronomical
7. LENGTH OF OBSERVATION 8. NUMBER OF OBJECTS 9. COURSE Other.
G/R 93 minutes 23 minutes 000 Insufficient Data for Evaluation
East to West Unknown Unk no wn
G/V 10 to 15 mins one
IO. BRIEF SUMMARY OF SIGHTING 1. COMMENTS . COMMENTS
One hite object with red halo. Object ith red halo. Object CONAD forecast center reported that that
moved West, stopped, then a balloon had escaped escaped from Las from Las
proceed made abrupt le abrupt turn Vegas, Nevada and was over the Vegas, Nevada and was over the
and proce and proc eded uth. Object was seen area of the sighting area of ighting trailing a crailing a
visually and through ground visually and through ground radar for l00 foot steel cable. Descriptbn l00 foot steel cable Descriptin
the times noted above. a bave of sighting and the above indi- of sighting and the above indi-
cate that this sighting was caused
by a balloon.
ATIC FORM 329 (REV 26 SEP 52)

10 11/03152
Muthi 10045-7-03
AlIt 4
ii
PHIT- ATIC 59 B4
115 YEC10 XYD136 XM 12 AeR 57 10
AJUADN RJEDEN AJEDWP RJLPHO
LAJIPHL 72D
1203.Z
MO CAA HILL AF UTAA
TO PEEBEYCONDA ABC ENT AFT COLC SPRING COLO
CSPLU/CONDR HQ 34TH AIR DIV KIRTLAND AFP MIEK
CESPAOO DR AIR TECHLICAL INTELLIGENCE CENTER WPAFE OHIO
CLAAA/LIF OF INTELLIGENOE I2 USAE VAS.IDO CLPAB/LIF OF INTELLIGENCE 1 USAE VAS.IDO
.-DP/CONDR HA ANO .--DP/CONDR HA ANO VPAFH OHIO
4
A.CLAS/PROH OOBZ-4-41-E FOR MCEP UFOE /1/ /A/ ROUND /B/ A8ETALL A.CLAS/PROH 00BZ-H-41-1 FOR MCDP UFOE /1/ 7A/ ROUND /8/ A8ETALL
AC/ WHITE WITA RID HALO'YD/ GNE /E/ N/A /T/ NEGATIVE /S/ RAD GLOW AT /C/ VHITE WITA RID HALO'/D/ ONE /E/ N/A /T/ NEGATIVE /S/ RAD GLON AT
CIRCUNFERENCE OF CBJECT /3/ NEGATIVE /1/ NEGATIVE /A7 /A/ KOVEIENT CIRCUNFERENCE CF OBJICT /3/ NEGATIVE /1/ NEGATIVE /O7 /A/ KOVEIENT f
OF "SHOCTING STAR" TYPE CEJECT IN THI SKY /B/ GRCUND-VISUAL 75 TC B OF "SYOCTING STAR" TYPS CEJECT IN THI SKY /B/ GRCUND-VISUAL 75 TO B
AACHBES ANGLE OF ELEVATION 4S DEGREES AZINUTH GRCUND-ELECTRONICS ThE
ANGLE OF ELEVATICN JNKIOWN AZIIUTH 377 DIGREES /C/ GROUNB-VISUAL
MSL2 6F LLEVATICN 57 T0 3) DEGEES AZIMUTH 249 DIGREES GROUND-ELECTRONICS
BNGLI UL ELAVATION U UNKGNONX AZIXUT.A 3 DEGRELS /D/ GROUND-VISUAL LEVEL
LIGHT CAST TO WEST STCPPED MONENTAMILY PROCELDED WEST MADE AIRUPT
LEGALE TUAN PROCEESDING SODTH GAOURD-ELICTRCNICS FIRST CTSERVED
(

IAUIES /3Y /A7 GROUND-VISUAL GHCUND-ELECTAONIC /OPNZN 2.A MILE MANSE
GALIILLAN-LQUIP.--T7 /D/ NEGATIVE /C/ 1/A /4/ /AS CRCSS-1ISUAL
T1AT2D 11-35 2 11 APH 57 GROUND-EL-CT GNIC 11:315Z 3) APR 57
SAAA GRCUND-ELICTRONIC. A7 OIGREES 7 MINUTES NCRTH 111 DEGREES 58 SAAA GRCUND-ELECTRONIC, A7 OEGREES 7 MINUTES NCRTH 111 DEGREES
LHUTES VEST /HILL AIR FORCE AASE UTAH/ /6/ ZA/ GRCUND-VISUAL L1.U1E6 1 HEST /HILL AIR FORCE DASE UTAH/ /6/ /A/ GRCUND-VISUAL
BLVD BLVD GOLEN UTAH STUBENT CGLEN UTAH STUDERT -
CODEN OODEN UTAN STUUENT
EN UTAH STUDCHT GROUND-ELECTRONIC GRCUND-ELECTRONIC
ILVNGE K BAKER 35 35S MEST 8 , S CLUNGEK EAKER SOUTE BOUNTIFUL UTAN RADAR CPERATOR
CAA RAPCCN FACILITY HILL AIR FORCE EASE UTAH GORDON J BATER JR AJ
461 NGRTH 200 LACH 1 KAYSVILLE UTAH RADAR OPERATOR CAA RAPCON FACILITY
MILL AIN FORGE BASE UTAH /E/ GROUND VISUAL NEGATIVE CROUND-ELEOTRONIC
A/10 VILLIAN J AENDERSON AF 24 524 447 25 GERERAL DELIVEAY CLEARFIELD
UIAH ATC RADAA RLPAIRMA 77/ ZA/ GRCURD-VISUAL CLEAR CRCUNT-ELEOTAGNIC

-
-
FOUL TAREDEJPHL 7AD
ADSO SCATTEBAD NIGHEA TAIN PRCKM LAYER ZE/ S FT - SU DEGREZS
- AFPACY 5 KIOTS 158 FT - 13) DAGACLS - APPROY 5 MIOTS 1EM -
11 - E7. DLGRELS - APPRCX 1 KNOTS 20 FT - 365 DEGREES - APPROX 21
M.CIS 5.00 FT -23 1 DEGRIES - APPROX 15 KNOTS IT - NEGATIVE
FT - M1GATIVE/C/ ONE /D/ -MILLS /E/. /E/ OS /7
HONE /SS NEGATIVE /L/ RADAR CU.TACT VITH A AIRCRAFT APPROX ED
.ILES WEST OF AILL APE AI1Z PROVCST MARSHAL HO CCAIA ALTHOUGH DIRECTION .ILES WEST CF AILL APE AIZ PROVCST MARSHAL HO CCAIA ALTHOUGH DIRECTION
AND BAHAVICR OF OSJEOT DIFPVRED BETUEEN VISUAL AD ELICTRC.IO CITENS AND BAHAVICR OF OSJEOT DIFFVRED BETUEEN VISUAL AD ELECTRCTIO CITENS
THE AOT THAT ELECTACHIC CITING WAS OSSERVED AT APPROXIMATELY THE SAMA THE MAOT THAT ELECTACHIO CITING WAS OBSERVED AT APPROXIIATELY THE SAMA
TIAE AS MEPORTED VISUAL CITING VOJLD APPEAR TO VERIRY EXISTANCE OF TIAE AS NEPORTED VISUAL CITING VOJLD APPEAR TO VERIFY EXISTANICE OF
AN ARIDENTI.ILD FLYING CBJICT CR METEORCLOGIOAL OR ASTRUNOTICAL AN ARIDENTI-ILD FLYING CBJICT CR METEORCLOGIOAL OR ASTRUNOTCAL
AANCMLNA CF SUCH SULSTANCE AS TO BE VIENED BCTH VISUALLY AND
CLECTRCNICALLY /I/ REGATIVE
+↓
L/AISZ APR RUPHL