Type: Physical Trace Evidence
Source: Dalnegorsk investigation reports and published research abstracts
The materials are frequently cited as the physical-evidence component of the Dalnegorsk case. Published accounts describe a variety of substances and unusual-looking fragments, but claims about their composition, rarity or origin must be evaluated against the specific sample, laboratory method and documented chain of custody. The existence of collected material does not independently prove that an extraterrestrial craft crashed at the site.