{"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":"1202248","name":"FIVE POINTS SAND & GRAVEL"},"operator":{"type":"operator","id":"L00208","name":"Martin Marietta Aggregates"},"controller":{"type":"controller","id":"M00174","name":"Martin Marietta Materials Inc"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00174","name":"Martin Marietta Materials Inc"},"object":{"type":"mine","id":"1202248","name":"FIVE POINTS SAND & GRAVEL"},"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":"1202248|M00174|1950-01-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M05423","name":"John W  Jones"},"object":{"type":"mine","id":"1202248","name":"FIVE POINTS SAND & GRAVEL"},"validFrom":"1998-11-01","validTo":"2001-05-21","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1202248|M05423|1998-11-01|2001-05-21"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L16144","name":"J W Jones Crushed Stone Inc"},"object":{"type":"mine","id":"1202248","name":"FIVE POINTS SAND & GRAVEL"},"validFrom":"1999-02-01","validTo":"2001-05-21","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1202248|L16144|1999-02-01|2001-05-21"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M05423","name":"John W  Jones"},"object":{"type":"operator","id":"L16144","name":"J W Jones Crushed Stone Inc"},"validFrom":"1999-02-01","validTo":"2001-05-21","current":false,"derived":true,"evidenceMineId":"1202248","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1202248|L16144|1999-02-01|M05423|1998-11-01|134651"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L00208","name":"Martin Marietta Aggregates"},"object":{"type":"mine","id":"1202248","name":"FIVE POINTS SAND & GRAVEL"},"validFrom":"2001-05-22","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1202248|L00208|2001-05-22|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00174","name":"Martin Marietta Materials Inc"},"object":{"type":"operator","id":"L00208","name":"Martin Marietta Aggregates"},"validFrom":"2001-05-22","validTo":null,"current":true,"derived":true,"evidenceMineId":"1202248","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1202248|L00208|2001-05-22|M00174|1950-01-01|105795"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1202248","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"}}