Distinct years the archive depicts, against Alexander Akimov’s lifetime (1953 – 1986) — 3% of it. One further depicted year falls outside it and is not counted.
A thread follows one event or historical theme across the archive, wherever and whenever it appears. Pulling a thread opens up a narrowed timeline view filtered to every year that thread touches.
The explosion of reactor 4 on April 1986 at the Chernobyl Nuclear Power Plant in Pripyat, in what is now modern-day Ukraine, that resulted in a massive release of radioactive material and an intensive ensuing cleanup operation.