Youtube has it in pieces. part 1:
part 2, part 3, part 4, part 5, part 6, part 7
1000 Misspent Hours describes it as "a tacky, stereotypically 50’s monster movie, compete with half-baked science, stuff that gives off ionizing radiation for absolutely no reason, and a running time not much in excess of 75 minutes" and gives it negative 3 stars. DVDTalk says it
is a taut, 73-minute thriller, and looks nothing like the visually flat, so-called semi-documentary style look of most American sci-fi films of the period. Rather, visually it's more of a bridge between film noir in the (cinematographer) John Alton mode, and the limitless imagination and ingenuity Bava would soon be applying to his own, "official" movies.