In the 1930s they put about 13,000 tonnes of gold in Fort Knox. (It now has about 4,500 tonnes). Density of gold is about 20g/cm^3, or 20 tonnes per cubic metre. So Fort Knox held up to 650m^3 of gold.
A normal swimming pool is about 25m x 12.5m x 2m which is 625m^3.
> Reported volume: This is the volume actually taken up by wastes that exist at the Inventory stock date. It is the volume taken up by wastes inside the tanks, vaults, silos and drums in which they are contained.
A normal swimming pool is about 25m x 12.5m x 2m which is 625m^3.
https://en.wikipedia.org/wiki/United_States_Bullion_Deposito...
This page indicates Sellafield has 2000m^3 of high level nuclear waste.
https://ukinventory.nda.gov.uk/site/sellafield/