Download coordinates as: Operation Ranger was the fourth American nuclear test series.

It was conducted in 1951 and was the first series to be carried out at the Nevada Test Site.

[1] All the bombs were dropped by B-50D bombers and exploded in the open air over Frenchman Flat (Area 5).

The exact locations of the tests are unknown, as they were all air drops.

[4] As the device to be tested in Greenhouse was in the stockpiling stage with respect to its high explosive system, it was felt that the entire test series could be performed using air dropped weapons.