low enough that humans could manipulate the stuff, behind several feet of steel, lead and concrete shielding, without immediately lethal radiation doses.
Wait, for real? I have zero training in handling fissile material, but I didn't think any significant level of radiation could make it through that much shielding.
Wait, for real? I have zero training in handling fissile material, but I didn't think any significant level of radiation could make it through that much shielding.