Reminds of this: https://en.m.wikipedia.org/wiki/Kramatorsk_radiological_accident https://en.m.wikipedia.org/wiki/Kramatorsk_radiological_acci... >The capsule

Reminds of this: https://en.m.wikipedia.org/wiki/Kramatorsk_radiological_accident https://en.m.wikipedia.org/wiki/Kramatorsk_radiological_acci... >The capsule was originally part of a radiation level gauge and was lost in the Karansky quarry in the late 1970s. The search for the capsule was unsuccessful and ended after a week. The gravel from the quarry was used in construction.The caesium capsule ended up in the concrete panel of apartment 85 of building 7 on Mariyi Pryimachenko Street >By the time the capsule was discovered, four residents of the building had died from it and 17 more had received varying doses of radiation.