{"id":"S85094382","label":"Oil well drilling--Lost circulation","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85094382","normalized_label":"oil well drilling--lost circulation","broader":["http://id.loc.gov/authorities/subjects/sh85039563"],"aliases":["Lost circulation in oil well drilling"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85094382","provider":"lcsh","revision":"7dd96f4afbdb6838","taxonomy_revision":"f050b5d4780b1289","title":"Oil well drilling--Lost circulation","url":"/topics/S85094382","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"9550094134329886276","address_version":"morton4x16-v1","coordinates":[0,20,18879,47104],"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}