Military: depleted uranium munitions
Self-tutoring about military technology: the tutor mentions depleted uranium munitions.
Depleted uranium munitions contain low-radiation uranium that’s left over after the high-grade uranium has been removed from a large sample. The leftover uranium that’s used in munitions, according to the US (and not only them), isn’t dangerously radioactive to be around.
The advantage of depleted uranium munitions is that uranium is much denser than other metals found in munitions, such as lead. Therefore, projectiles made from it tend to continue through a target. As they do so, tremendous friction results, often causing a fire. Moreover, the target material may be torn to shreds which become shrapnel. Therefore, it’s the particularly destructive nature of depleted uranium munitions, due to their density, that makes them so useful.
The US claims it’s been using depleted uranium munitions since 1991. Numerous other world powers, including Russia, the UK, China, and France, have them.
Source:Oracle Tutoring by Jack and Diane, Campbell River, BC.