{"data":{"schemaVersion":"realm.temporal-relationships.v1","temporalSemantics":{"validTime":{"granularity":"date","bounds":"inclusive","nullStart":"start date not published in the upstream history row","nullEnd":"open-ended in the upstream history row; not independent proof of present control"},"transactionTime":{"observedAt":"2026-10-17T05:35:58.500035+00:00","meaning":"time the checksum-addressed MDRS artifacts were observed by the PostgreSQL ingestion"},"derivation":{"controllerControlsOperator":"intersection of controller and operator valid-time intervals evidenced through this mine","currentIdentity":"current controller and operator are asserted only by the MDRS Mines snapshot"}},"current":{"mine":{"type":"mine","id":"0800524","name":"GADSDEN COUNTY MINE"},"operator":{"type":"operator","id":"L00321","name":"Engelhard Corp"},"controller":{"type":"controller","id":"0062309","name":"BASF SE"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L00578","name":"Floridin Company"},"object":{"type":"mine","id":"0800524","name":"GADSDEN COUNTY MINE"},"validFrom":"1950-01-01","validTo":"1986-12-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0800524|L00578|1950-01-01|1986-12-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00158","name":"ITT Corp"},"object":{"type":"mine","id":"0800524","name":"GADSDEN COUNTY MINE"},"validFrom":"1950-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0800524|M00158|1950-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00158","name":"ITT Corp"},"object":{"type":"operator","id":"L00578","name":"Floridin Company"},"validFrom":"1950-01-01","validTo":"1986-12-31","current":false,"derived":true,"evidenceMineId":"0800524","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0800524|L00578|1950-01-01|M00158|1950-01-01|105348"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00259","name":"Engelhard Corp"},"object":{"type":"mine","id":"0800524","name":"GADSDEN COUNTY MINE"},"validFrom":"1950-01-01","validTo":"2006-07-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0800524|M00259|1950-01-01|2006-07-31"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L09064","name":"Floridin Company"},"object":{"type":"mine","id":"0800524","name":"GADSDEN COUNTY MINE"},"validFrom":"1987-01-01","validTo":"1997-09-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0800524|L09064|1987-01-01|1997-09-30"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M01812","name":"Rio Tinto Group"},"object":{"type":"mine","id":"0800524","name":"GADSDEN COUNTY MINE"},"validFrom":"1987-01-01","validTo":"2005-01-19","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0800524|M01812|1987-01-01|2005-01-19"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M01812","name":"Rio Tinto Group"},"object":{"type":"operator","id":"L09064","name":"Floridin Company"},"validFrom":"1987-01-01","validTo":"1997-09-30","current":false,"derived":true,"evidenceMineId":"0800524","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0800524|L09064|1987-01-01|M01812|1987-01-01|121399"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L00321","name":"Engelhard Corp"},"object":{"type":"mine","id":"0800524","name":"GADSDEN COUNTY MINE"},"validFrom":"1997-10-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0800524|L00321|1997-10-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00259","name":"Engelhard Corp"},"object":{"type":"operator","id":"L00321","name":"Engelhard Corp"},"validFrom":"1997-10-01","validTo":"2006-07-31","current":false,"derived":true,"evidenceMineId":"0800524","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0800524|L00321|1997-10-01|M00259|1950-01-01|108531"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0047789","name":"Active Minerals Inc"},"object":{"type":"mine","id":"0800524","name":"GADSDEN COUNTY MINE"},"validFrom":"2005-01-20","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0800524|0047789|2005-01-20|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0047789","name":"Active Minerals Inc"},"object":{"type":"operator","id":"L09064","name":"Floridin Company"},"validFrom":"2005-01-20","validTo":"1997-09-30","current":false,"derived":true,"evidenceMineId":"0800524","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0800524|L09064|1987-01-01|0047789|2005-01-20|5904"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0062309","name":"BASF SE"},"object":{"type":"mine","id":"0800524","name":"GADSDEN COUNTY MINE"},"validFrom":"2006-08-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0800524|0062309|2006-08-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0062309","name":"BASF SE"},"object":{"type":"operator","id":"L00321","name":"Engelhard Corp"},"validFrom":"2006-08-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"0800524","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0800524|L00321|1997-10-01|0062309|2006-08-01|8467"}}],"coverage":{"historyRecords":5,"edgeCount":13,"intervalAnomalies":1,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"0800524","dataSource":"postgres","snapshotId":"2026-10-17T05:35:58.500035+00:00","completedAt":"2026-10-17T06:17:15.228Z","sourceCount":20,"totalRows":15450873,"relationshipSemantics":"valid time; null validTo means current or open-ended in the source"}}