{"id":"S85092974","label":"Nuclear excavation","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85092974","normalized_label":"nuclear excavation","broader":["http://id.loc.gov/authorities/subjects/sh85014797","http://id.loc.gov/authorities/subjects/sh85046104","http://id.loc.gov/authorities/subjects/sh85092958","http://id.loc.gov/authorities/subjects/sh85139588"],"aliases":["Atomic blasting","Cratering, Nuclear","Nuclear cratering"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85092974","provider":"lcsh","revision":"1c1cf2c56122d810","taxonomy_revision":"f050b5d4780b1289","title":"Nuclear excavation","url":"/topics/S85092974","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"9550094134329623044","address_version":"morton4x16-v1","coordinates":[0,20,18857,47104],"answer_status":"Directory metadata; local answer requires separate source review","truth_status":"Subject descriptor, not a factual answer or a demonstrated knowledge gap","reviewed_answer":null}