Operation Cornerstone

Nuclear test Operation Cornerstone
nation	United States
Test location	Nevada Test Site
Period	1988-1989
Number of tests	12
Test type	Underground tests
Max. Explosive force	20-150 kT
navigation
Previous test	Operation Touchstone
Next test	Operation Aqueduct

The Operation Cornerstone was a series of twelve US nuclear weapons testing , the 1988 and 1989 on the site Nevada Test in Nevada was conducted.

The individual tests of the Cornerstone series

#	bomb	Date / Time ( GMT )	Proving Ground	Test type	Explosive power	Remarks
1	Dalhart	October 13, 1988 2:00 p.m.	Area 4u	Manhole	<150 kT
2	Monahans-A Monahans-B	November 9, 1988 8:15 pm	Area 3lk Area 6i	Shaft shaft	<20 kT <20 kT	Simultaneous detonation of different bombs in different shafts
3	Kawich A-White Kawich A-Blue	December 9, 1988 3:15 p.m.	Area 8n Area 8n	Shaft shaft	<20 kT <20 kT	Simultaneous ignition of various bombs in one shaft
4th	Misty echo	December 10, 1988 8:30 p.m.	Area 12n.23	tunnel	<150 kT
5	Texarkana	February 10, 1989 8:06 pm	Area 7 approx	Manhole	20 to 150 kT
6th	Kawich-Red Kawich-Black	February 24, 1989 4:15 p.m.	Area 2cu Area 2cu	Shaft shaft	<20 kT <20 kT	Simultaneous ignition of various bombs in one shaft
7th	Ingot	March 9, 1989 2:05 p.m.	Area 2gg	Manhole	20 to 150 kT
8th	Palisade-1 Palisade-2 Palisade-3	May 15, 1989 1:10 p.m.	Area 4at Area 4at Area 4at	Shaft shaft shaft	<20 kT <20 kT <20 kT	Simultaneous ignition of various bombs in one shaft
9	Tulia	May 26, 1989 6:07 pm	Area 4s	Manhole	<20 kT
10	Contact	June 22, 1989 9:15 pm	Area 20aw	Manhole	20 to 150 kT
11	Amarillo	June 27, 1989 3:30 p.m.	Area 19ay	Manhole	20 to 150 kT
12	Disco Elm	September 14, 1989 3:00 p.m.	Area 12p.03	tunnel	<20 kT

Nuclear test Operation Cornerstone
nation	United States United States
Test location	Nevada Test Site
Period	1988-1989
Number of tests	12
Test type	Underground tests
Max. Explosive force	20-150 kT
navigation
Previous test	Operation Touchstone
Next test	Operation Aqueduct