Short answers, pulled from the story.
Scientists at the University of California, Berkeley discovered einsteinium in December 1952 after analyzing debris from the Ivy Mike hydrogen bomb test on the 1st of November 1952. Albert Ghiorso and his team identified element 99 within radioactive dust samples collected from the Pacific Ocean explosion.
The U.S. military classified the existence of einsteinium immediately following its detection to maintain Cold War secrecy against the Soviet Union. Government orders prevented researchers from publishing data about multiple neutron capture processes until the Berkeley team declassified their results in 1955 for the Geneva Atomic Conference.
High Flux Isotope Reactor facilities at Oak Ridge National Laboratory produce most of the world's einsteinium by burning tens of grams of curium to create milligram quantities of berkelium and einsteinium. The SM-2 loop reactor in Dimitrovgrad, Russia offers similar production capacity but reports fewer details about its output.
Einsteinium has a melting point of 860 degrees Celsius which is lower than californium or fermium due to surface effects that reduce the observed value in tiny samples. A sample weighing approximately 300 micrograms glows visibly in the dark because it releases heat at a rate of 1000 watts per gram during self-damage.
Approximately 0.01 percent of ingested einsteinium reaches the bloodstream within hours while about 65 percent deposits into bone tissue where it remains for decades if not decayed by radiation. Testicles receive 0.035 percent of the total dose and ovaries retain 0.01 percent indefinitely according to animal studies conducted over several years.