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Operation Mandrel
Mandrel Mint Leaf reentry team.
Information
Country United States
Test site Varied, includes Alaska and Colorado
Period 1969–1970
Number of tests 53
Test type Underground
Max. yield 1.2 megatons
Navigation
Previous test Operation Bowline
Next test Operation Emery

Operation Mandrel[1] was a series of 53 nuclear test explosions conducted in 1969 and 1970. This test series included a 1.2 megaton "calibration shot" code-named Milrow, which was detonated 1,220 metres (4,000 ft) underground at Amchitka Island, Alaska, and the 40 kiloton gas stimulation experiment code-named Rulison, detonated near Grand Valley, Colorado

These tests followed Bowline and preceded the Emery series.

The individual blasts of this series were:

Name Date Size
ILDRIM July 16, 1969 20 to 200 kilotons
HUTCH July 16, 1969 20 to 200 kilotons
SPIDER A, B August 14, 1969 < 20 kilotons
PLIERS August 27, 1969 < 20 kilotons
HOREHOUND August 27, 1969 < 20 kilotons
RULISON (Grand Valley, Colorado) September 10, 1969 40 kilotons
MINUTE STEAK September 12, 1969 < 20 kilotons
JORUM September 16, 1969 < 1 Mt
KYACK A, B September 20, 1969 < 20 kilotons
SEAWEED C, D, E October 1, 1969 < 20 kilotons
MILROW (Amchitka Island, AK) October 2, 1969 1 - 1.2 megatons
PITKIN October 8, 1969 200 kilotons to 1 megaton
SEAWEED B October 16, 1969 < 20 kilotons
CRUET October 29, 1969 11 kilotons
POD A, B, C, D October 29, 1969 16.7 kilotons
CALABASH October 29, 1969 110 kilotons
SCUTTLE November 13, 1969 1.7 kilotons
PICCALILLI November 21, 1969 20 to 200 kilotons
PLANER November 21, 1969 < 20 kilotons
DIESEL TRAIN December 5, 1969 < 20 kilotons
CULANTRO A, B December 10, 1969 < 20 kilotons
TUN A, B, C, D December 10, 1969 4 < 20 kilotons
GRAPE A December 17, 1969 20 to 200 kilotons
LOVAGE December 17, 1969 < 20 kilotons
TERRINE-WHITE, -YELLOW December 18, 1969 2 20 to 200 kilotons
FOB-GREEN, -RED, -BLUE January 23, 1970 3 < 20 kilotons
AJO January 30, 1970 < 20 kilotons
GRAPE B February 4, 1970 20 to 200 kilotons
BELEN February 4, 1970 20 to 200 kilotons
LABIS February 5, 1970 25 kilotons
DIANA MIST February 11, 1970 < 20 kilotons
CUMARIN February 25, 1970 20 to 200 kilotons
YANNIGAN-RED, -BLUE, -WHITE February 26, 1970 3 20 to 200 kilotons
CYATHUS March 6, 1970 8.7 kilotons
ARABIS-RED, -GREEN, -BLUE March 6, 1970 3 < 20 kilotons
JAL March 19, 1970 < 20 kilotons
SHAPER March 23, 1970 20 to 200 kilotons
HANDLEY March 26, 1970 > 1 megaton
SNUBBER April 21, 1970 12.7 kilotons
CAN-GREEN, -RED April 21, 1970 2 20 to 200 kilotons
BEEBALM May 1, 1970 < 20 kilotons
HOD A (GREEN), B (RED) May 1, 1970 < 20 kilotons
HOD C May 1, 1970 < 20 kilotons
MINT LEAF May 5, 1970 < 20 kilotons
DIAMOND DUST May 12, 1970 < 20 kilotons
CORNICE-YELLOW, -GREEN May 15, 1970 2 20 to 200 kilotons
MANZANAS May 21, 1970 < 20 kilotons
MORRONES < May 21, 1970 20 to 200 kilotons
HUDSON MOON May 26, 1970 < 20 kilotons
FLASK-GREEN, -YELLOW, -RED May 26, 1970 105 kilotons, 90 kilotons, and 35 kilotons
PITON C May 28, 1970 < 20 kilotons
PITON A, B May 28, 1970 < 20 kilotons
ARNICA-YELLOW, -VIOLET June 26, 1970 < 20 kilotons

References

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