# Why was beta contamination found on some of the clothing? · Dyatlov Pass incident > Four answers have been proposed. Two members (Krivonishenko and Kolevatov) had worked at or near nuclear facilities and their clothing carried… leads… Source: https://mysteriesdept.com/mysteries/dyatlov-pass/questions/QST0D79DJWJ24G5/why-was-beta-contamination-found-on-some-of-the-clothing Publisher: Mysteries Department Licence: CC BY 4.0 (credit Mysteries Department and link the page) Updated: 2026-10-26T11:57:20+00:00 --- **0** # Why was beta contamination found on some of the clothing? Asked 26 Oct 2026 by [**apollo** ](https://mysteriesdept.com/u/apollo)·Part of [What made nine experienced ski-tourers cut their way out of the tent and leave it, underdressed, in the dark?](https://mysteriesdept.com/mysteries/dyatlov-pass/questions/QST0D79DJCY4S3V/what-made-nine-experienced-ski-tourers-cut-their-way-out-of)·4 answers·0·0 following **Most likely: two members (Krivonishenko and Kolevatov) had worked at or near nuclear facilities and their clothing carried…** Ahead on the evidence, not yet confirmed. It needs two reviews to be accepted. ## Where it stands Four answers have been proposed. Two members (Krivonishenko and Kolevatov) had worked at or near nuclear facilities and their clothing carried… leads, with evidence 1 for: partly supported by its tests. Three are still possible. ## Why it matters The radiological examination in the case file found contamination on several clothing items from the ravine bodies above background, and it is the main physical support for the military and secret-service readings⁠[[1]](https://mysteriesdept.com/sources/SRC0D79D942388C/criminal-case-on-the-death-of-the-tourists-in-the-area-of). ## Answers 4 [**Two members (Krivonishenko and Kolevatov) had worked at or near nuclear facilities and their clothing carried…** ](https://mysteriesdept.com/mysteries/dyatlov-pass/answers/ANS0D79DT6Y11ZE/two-members-krivonishenko-and-kolevatov-had-worked-at-or) Partly supported by its tests Evidence: 1 for Most likely [**A radioactive source connected to the event itself.** ](https://mysteriesdept.com/mysteries/dyatlov-pass/answers/ANS0D79DV6607H8/a-radioactive-source-connected-to-the-event-itself) Not tested enough to call either way Evidence: 1 against Still possible [**Atmospheric fallout from 1950s testing, concentrated by weeks in meltwater.** ](https://mysteriesdept.com/mysteries/dyatlov-pass/answers/ANS0D79DTPJ3ZMX/atmospheric-fallout-from-1950s-testing-concentrated-by-weeks) Not tested enough to call either way Evidence: 1 against Still possible [**None of these.** ](https://mysteriesdept.com/mysteries/dyatlov-pass/answers/ANS0D79DVNT04JF/none-of-these) Not tested enough to call either way Evidence: none yet Still possible ## History 1. 1959[Prosecutor's Office of Sverdlovsk Oblast (Ivanov puts forward: atmospheric fallout from 1950s testing, concentrated by weeks in meltwater.](https://mysteriesdept.com/sources/SRC0D79D942388C/criminal-case-on-the-death-of-the-tourists-in-the-area-of) 1. 1959[Prosecutor's Office of Sverdlovsk Oblast (Ivanov: the 1959 expert noted that water flow could have reduced rather than raised the contamination, implying…](https://mysteriesdept.com/sources/SRC0D79D942388C/criminal-case-on-the-death-of-the-tourists-in-the-area-of)Against: Atmospheric fallout from 1950s testing, concentrated by weeks in meltwater. 1. 1959[Prosecutor's Office of Sverdlovsk Oblast (Ivanov: only some clothing items were tested and found contaminated; no systematic survey of bodies or equipment was…](https://mysteriesdept.com/sources/SRC0D79D942388C/criminal-case-on-the-death-of-the-tourists-in-the-area-of)Against: A radioactive source connected to the event itself. 1. 2026[Wikipedia contributors puts forward: two members (Krivonishenko and Kolevatov) had worked at or near nuclear facilities and their clothing carried…](https://mysteriesdept.com/sources/SRC0D79DATR4CMD/dyatlov-pass-incident) 1. 2026[Wikipedia contributors puts forward: a radioactive source connected to the event itself.](https://mysteriesdept.com/sources/SRC0D79DATR4CMD/dyatlov-pass-incident) 1. 2026[Wikipedia contributors: krivonishenko had worked at the Mayak complex; clothing was exchanged among the group.](https://mysteriesdept.com/sources/SRC0D79DATR4CMD/dyatlov-pass-incident)For: Two members (Krivonishenko and Kolevatov) had worked at or near nuclear facilities and their clothing carried… 1. 26 Oct 2026Asked on this site ## Discussion 0 [Add to the discussion](https://mysteriesdept.com/signin?next=/mysteries/dyatlov-pass/questions/QST0D79DJWJ24G5/why-was-beta-contamination-found-on-some-of-the-clothing%23discussion) Help with this question [ **Propose an answer** Something the evidence could support or rule out ] [ **Propose an answer** Something the evidence could support or rule out ](https://mysteriesdept.com/signin?next=/mysteries/dyatlov-pass/questions/QST0D79DJWJ24G5/why-was-beta-contamination-found-on-some-of-the-clothing%23add-answer) [ **Add evidence** A result for or against an answer ] [ **Add evidence** A result for or against an answer ](https://mysteriesdept.com/signin?next=/mysteries/dyatlov-pass/questions/QST0D79DJWJ24G5/why-was-beta-contamination-found-on-some-of-the-clothing%23add-evidence) [ **Ask a sub-question** A smaller question that would help settle this one ] [ **Ask a sub-question** A smaller question that would help settle this one ](https://mysteriesdept.com/signin?next=/mysteries/dyatlov-pass/questions/QST0D79DJWJ24G5/why-was-beta-contamination-found-on-some-of-the-clothing%23add-question) [ **Add a source** A paper, archive record or image ] [ **Add a source** A paper, archive record or image ](https://mysteriesdept.com/signin?next=/mysteries/dyatlov-pass/questions/QST0D79DJWJ24G5/why-was-beta-contamination-found-on-some-of-the-clothing%23add-source) Where it fits Dyatlov Pass incident [**What made nine experienced ski-tourers cut their way out of the tent and leave it, underdressed, in the dark?** ](https://mysteriesdept.com/mysteries/dyatlov-pass/questions/QST0D79DJCY4S3V/what-made-nine-experienced-ski-tourers-cut-their-way-out-of)Key question · most likely a small slab avalanche, released from the wind-loaded slope above the cut the group made to level the tent,… **Why was beta contamination found on some of the clothing?** You're here · two members (Krivonishenko and Kolevatov) had worked at or near nuclear facilities and their clothing carried… [ Ask a question under this one ]