employees etc governmentliability healthandhygiene lawandlegislation laws legalstatus liabilityforenvironmentaldamages liabilityforoilpollutiondamages liabilityforspacevehicleaccidents medicalcare nevada nuclearweapons nuclearweaponsindustry nuclearweaponstestingvictims officialsandemployees physiologicaleffect radiationinjuries radiationvictims radioactivefallout rulesandpractice testing unitedstates utah workers'compensationclaims