This doorstop is better than a folded-up newspaper

I want one like they had at Los Alamos:

https://books.google.com/books?id=7papZR4oVssC&pg=PA135&lpg=PA135&dq=richard+feynman+gold+doorstop&source=bl&ots=etUWcboOZW&sig=fsx-K8Y-Z2exyIouMHjup8XtFf4&hl=en&sa=X&ved=0ahUKEwjIoL-wg8vOAhVI3GMKHfzVD98Q6AEIJDAB#v=onepage&q=richard%20feynman%20gold%20doorstop&f=false