{"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":"0103547","name":"Shady Grove Quarry"},"operator":{"type":"operator","id":"0176414","name":"Creekwood Resources, LLC"},"controller":{"type":"controller","id":"0144281","name":"Arcosa, Inc"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"0176414","name":"Creekwood Resources, LLC"},"object":{"type":"mine","id":"0103547","name":"Shady Grove Quarry"},"validFrom":"2021-05-11","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0103547|0176414|2021-05-11|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0161921","name":"Jeffrey  Major"},"object":{"type":"mine","id":"0103547","name":"Shady Grove Quarry"},"validFrom":"2021-05-11","validTo":"2022-08-15","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0103547|0161921|2021-05-11|2022-08-15"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0161921","name":"Jeffrey  Major"},"object":{"type":"operator","id":"0176414","name":"Creekwood Resources, LLC"},"validFrom":"2021-05-11","validTo":"2022-08-15","current":false,"derived":true,"evidenceMineId":"0103547","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0103547|0176414|2021-05-11|0161921|2021-05-11|33908"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0144281","name":"Arcosa, Inc"},"object":{"type":"mine","id":"0103547","name":"Shady Grove Quarry"},"validFrom":"2022-08-16","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0103547|0144281|2022-08-16|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0144281","name":"Arcosa, Inc"},"object":{"type":"operator","id":"0176414","name":"Creekwood Resources, LLC"},"validFrom":"2022-08-16","validTo":null,"current":true,"derived":true,"evidenceMineId":"0103547","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0103547|0176414|2021-05-11|0144281|2022-08-16|29381"}}],"coverage":{"historyRecords":2,"edgeCount":5,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"0103547","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"}}