Results of chemical analysis of soil properties at the emergency crash site of the launch vehicle ‘Soyuz-FG’ in Kazakhstan

This data set contains information about 227 samples taken at the sites under con-sideration in the Ulytau region of Kazakhstan: -in October 2018 (in the first days after the accident; ‘2018’ in the columns of the table in the Supplementary file), -in October 2019 (one year after the accident; ‘2019’ in the columns of the table in the Supplementary file), -in September 2022 (4 years after the accident; ‘a’ in the columns of the table in the Supplementary file), -in May 2023 (4.5 years after the accident; ‘s’ in the columns of the table in the Supplementary file). The vast majority of samples were analyzed in two laboratories independently.