Document Details


Title:
OPERATION HARDTACK - PROJECT 4.1, EFFECTS ON EYES FROM EXPOSURE TO VERY-HIGH-ALTITUDE BURSTS (DELETED)
Author(s):
Subject Terms:
HARDTACK I OPERATION; RADIATION EFFECTS; INJURIES; EYES; TEAK EVENT; ORANGE EVENT; ANIMALS; RESEARCH PROGRAMS
Document Location:
Location - NNSA/NSO Nuclear Testing Archive Address - P.O. Box 98521 City - Las Vegas State - NV Zip - 89193-8521 Phone - (702)794-5106 Fax - (702)862-4240 Email - CIC@NV.DOE.GOV
Document Type:
REPORT
Publication Date:
1960 Oct 14
Declassification Status:
Sanitized
Document Pages:
0058
Accession Number:
NV0051061
Document Number(s):
WT1633EX
Originating Research Org.:
* AF
OpenNet Entry Date:
1994 Aug 26
Description/Abstract:
THE PRIMARY OBJECTIVE WAS TO DETERMINE THE EXTENT OF CHORIORETINAL DAM AGE CAUSED BY EXPOSURE TO VERY-HIGH-ALTITUDE, HIGH-YIELD NUCLEAR DETON ATIONS AT DISTANCES OF 50 TO 350 NAUTICAL MILES FROM BURST POINT AND T O RELATE EXPERIMENTAL DATA TO THEORETICAL CALCULATIONS. A CORRELATED OBJECTIVE WAS TO ESTIMATE, FROM THE DATA DERIVED FROM THESE EXPERIMENT S, DISTANCE LIMITS BEYOND WHICH RETINAL BURNS WERE NOT EXPECTED TO OCC UR FROM NUCLEAR DETONATIONS AT THESE ALTITUDES. PIGMENTED RABBITS WER E EXPOSED AT VARYING DISTANCES FROM SURFACE ZERO, ON THE SURFACE AND A T ALTITUDE, TO THE RADIANT THERMAL ENERGY FROM TWO VERY-HIGH-ALTITUDE BURSTS. BURNS WERE PRODUCED IN ALL ANIMALS AT ALL STATIONS WHERE LINE -OF-SIGHT VISION PREVAILED. DURING SHOT TEAT [ ] AT ABOUT 252 ,000-FOOT ALTITUDE), CHORIORETINAL BURNS AVERAGING 0.5MM IN DIAMETER W ERE PRODUCED IN RABBITS EXPOSED BEHIND PLEXIGLASS IN AN AIRCRAFT AT AN ALTITUDE OF 15,000 FEET AND A SLANT RANGE OF 307 NAUTICAL MILES FROM THE BURST POINT. DURING SHOT ORANGE [ ] AT ABOUT 125,000-FOOT ALTITUDE), SIMILAR LESIONS WERE PRODUCED IN RABBITS BEHIND PLEXIGLASS AIRCRAFT WINDOWS AT AN ALTITUDE OF 24,000 FEET AND A SLANT RANGE OF 22 6 NAUTICAL MILES FROM THE BURST POINT. IT IS ESTIMATED THAT COMPARABL E BURNS IN THE RABBIT MIGHT WELL OCCUR ON THE SURFACE AT APPROXIMATELY THESE SAME DISTANCES WHEN VIEWED WITH NO INTERVENING ATTENUATOR (PLEX IGLASS). FROM THESE DATA IT IS CONCLUDED THAT ALL RETINAL BURNS OCCUR ING WITHIN 160 NAUTICAL MILES WOULD PRODUCE A PERMANENT SCOTOMA IN THE HUMAN. MACULAR INVOLVEMENT ESPECIALLY WOULD REDUCE VISUAL ACUITY TO A CRITICAL LEVEL.


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