{"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":"3609133","name":"Kennedy Hill Quarry 1, 2 , and 3"},"operator":{"type":"operator","id":"0062823","name":"D & E Stone"},"controller":{"type":"controller","id":"0052529","name":"Daniel  Meshach"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"0051013","name":"Marty G. Evans"},"object":{"type":"mine","id":"3609133","name":"Kennedy Hill Quarry 1, 2 , and 3"},"validFrom":"2002-05-01","validTo":"2005-08-09","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3609133|0051013|2002-05-01|2005-08-09"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0041369","name":"Marty G  Evans"},"object":{"type":"mine","id":"3609133","name":"Kennedy Hill Quarry 1, 2 , and 3"},"validFrom":"2002-05-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3609133|0041369|2002-05-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0041369","name":"Marty G  Evans"},"object":{"type":"operator","id":"0051013","name":"Marty G. Evans"},"validFrom":"2002-05-01","validTo":"2005-08-09","current":false,"derived":true,"evidenceMineId":"3609133","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3609133|0051013|2002-05-01|0041369|2002-05-01|2471"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0062823","name":"D & E Stone"},"object":{"type":"mine","id":"3609133","name":"Kennedy Hill Quarry 1, 2 , and 3"},"validFrom":"2005-08-10","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3609133|0062823|2005-08-10|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0052529","name":"Daniel  Meshach"},"object":{"type":"mine","id":"3609133","name":"Kennedy Hill Quarry 1, 2 , and 3"},"validFrom":"2005-08-10","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3609133|0052529|2005-08-10|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0052529","name":"Daniel  Meshach"},"object":{"type":"operator","id":"0062823","name":"D & E Stone"},"validFrom":"2005-08-10","validTo":null,"current":true,"derived":true,"evidenceMineId":"3609133","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3609133|0062823|2005-08-10|0052529|2005-08-10|6675"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"3609133","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"}}