Watch: Newly declassified nuclear weapon tests

Berkeley, Calif. — The U.S. government has declassified footage of hundreds of weapons test conducted between 1945 and 1962.

Researchers and film experts, led by Lawrence Livermore National Laboratory (LLNL) weapon physicist Greg Spriggs, have been working for the past five years scanning and declassifying the decomposing films.

NBC Bay Area reports the team has located around 6,500 films. About 4,200 have been scanned to they can be preserved in digital form. 750 of those films have been declassified.

Now, a small collection of 64 videos of tests conducted by LLNL have been published on the agency’s YouTube channel.

Spriggs thinks it will take another two years to scan the remaining films, and even longer to analyze and declassify the footage.