The United States's Whetstone nuclear test series followed the Operation Niblick series and preceded the Operation Flintlock series.

Two tests were conducted during this series by the United Kingdom: Cormorant and Courser.

{| class="wikitable sortable"

|+ United States' Whetstone series tests and detonations

|-

!style="background:#ffdead;" | Name

!style="background:#efefef;" | Date time (UT)

!style="background:#ffdead;" | Local time zone

!style="background:#efefef;" | Location

!style="background:#ffdead;" | Elevation + height

!style="background:#efefef;" | Delivery <br />Purpose

!style="background:#efefef;" | Device

!style="background:#ffdead;" | Yield

!style="background:#efefef;" class="unsortable" | Fallout

!style="background:#ffdead;" class="unsortable" | References

!style="background:#efefef;" class="unsortable" | Notes

|-

! Bye

| 13:15:00.15

| style="text-align:center;" | PST (–8&nbsp;hrs)<br /> || NTS Area U10i

| –

| underground shaft,<br />weapons development

|

| style="text-align:center;" |

| Venting detected, less than

|

| style="text-align:center;" |

| Venting detected,

|

| A Plowshare project for hard, dry excavation test, to study dispersion of radionuclides.

|-

! Wool

| 16:00:00.14

| style="text-align:center;" | PST (–8&nbsp;hrs)<br /> || NTS Area U9bh

| –

| underground shaft,<br />weapons development

|

| style="text-align:center;" |

| Venting detected,

|