The pressure suits worn by the excavation team have NASA logos on them, even though NASA plays no role in the story. Presumably these were the pressure suits available to the filmmakers.
(at around 7 mins) Photographs are taken with a 35mm SLR that doesn't have a motor drive attached, however the audio has the sound of a motor drive after each snap of the shutter.
A government official states that the anomalies are undetectable with man-made technology, then immediately shows a map of them made with thermal imaging, which is man-made technology.