Presumably that's the same one that's described in the article as "an “ancient” safe that functioned so poorly, it opened only if Serber kicked it at a particul

Presumably that's the same one that's described in the article as "an “ancient” safe that functioned so poorly, it opened only if Serber kicked it at a particular point while typing in the lock combination." That's also sourced back to a book about the Manhattan Project: https://books.google.com.au/books?id=Ys0N4rFgt6UC&pg=PA160&lpg=PA160&dq=%22charlotte+serber%22&source=bl&ots=Kr49bI5Jat&sig=s6RCnAtwrzDRmbuTy5w3RBD_uY4&hl=en&sa=X&redir_esc=y#v=onepage&q=%22charlotte%20serber%22&f=false https://books.google.com.au/books?id=Ys0N4rFgt6UC&pg=PA160&l...