The struggle to safeguard Preventing_or_letting against hazards immediately after the accident Catastrophe , together with later decontamination efforts of the surroundings , ultimately involved Cause_to_be_included more than 500,000 liquidators and cost Cost an estimated 18 billion Soviet rubles—roughly US $ 68 billion in 2019 , adjusted for inflation .

Many buildings , however , are directly exposed Reveal_secret to landslide hazards Catastrophe because of the steep terrain .

the mcclelland royal commission Research , an examination Scrutiny of the effects Influence of the tests Testing , delivered Sending its report Reporting in 1985 , and found Know that significant radiation hazards still existed Presence at many of the maralinga test Research areas .