The United States conducted over 1,000 nuclear tests from 1945-1992.
And, prior to 1963, many above-ground tests were conducted on US soil, at the Nevada Test Site.
Atmospheric atomic bomb tests in Nevada during the 1950s created mushroom clouds that could be seen for nearly 100 miles.
Research suggests these tests also likely contributed to hundreds of thousands of deaths across the country, as fallout entered the environment and atmosphere.
A still from the Castle Union test in 1954 is pictured
The US conducted over 200 total atmospheric during its nuclear research – meaning they are carried out in the atmosphere, being dropped from airplanes, detonated on barges or islands, or being buried at a shallow depth to create a surface-breaking crater.
The first atmospheric test took place on July 16, 1945 in New Mexico, on what was then the Alamogordo Bombing Range, according to a report from the US Department of Energy.
And, between June 1946 and November 1962, both atmospheric and underground tests were conducted in the Marshall Islands, Christmas Island, Johnston Atoll in the Pacific Ocean, and over the South Atlantic Ocean.
On March 1, 1954, scientists conducted a hydrogen bomb test at Bikini Atoll.
Code-named Castle Bravo, the size of the event expectations, leading to radioactive fallout.
This travelled to the nearby inhabited atolls of Rongelap and Utrik, and led to the evacuation of 253 people from the two islands for medical care.
Prior to 1963, many above-ground tests were conducted on US soil, at the Nevada Test Site. Atmospheric atomic bomb tests in Nevada during the 1950s created mushroom clouds that could be seen for nearly 100 miles.
While some returned to Utrik just a few months later, the inhabitants of Rongelap did not return until 1957, and they later chose to leave again.
The catastrophic test prompted many to call for the ban of atmospheric testing.
After 1962, all nuclear tests in the US were conducted underground, many of which took place at the Nevada Test Site.