 Did you know living in this apartment block could be deadly? Well, if you called this block home in the 1980s, then it may have just been the last place you would have lived. This is building 7, Kramatorsk, Donetsk, Ukraine. Starting in 1980, shortly after residents had moved into the new building and were pretty otherwise healthy, started dying of leukemia, which is kind of strange. Over 9 years, 4 people from 2 different families died all from leukemia and all of them lived in flat 85. Eventually, in 1989, after much pushing from the second family's father, an investigation found a radioactive cesium-137 capsule buried within the wall. Well, long story short, it turned out that the capsule was originally from a radiation level gauge, which had become lost in the Keransky quarry in the late 1970s. At the time, it was searched for, but it had become mixed up in gravel that found its way into the concrete of building 7. Talk about a building defect.