{"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":"4503677","name":"Rockport Quarry LLC"},"operator":{"type":"operator","id":"0107707","name":"Rockport Quarry LLC"},"controller":{"type":"controller","id":"0091135","name":"Marvin D  Donovan Sr; Marvin D  Donovan Jr"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"0107707","name":"Rockport Quarry, LLC"},"object":{"type":"mine","id":"4503677","name":"Rockport Quarry LLC"},"validFrom":"2010-01-27","validTo":"2012-07-26","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4503677|0107707|2010-01-27|2012-07-26"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0091135","name":"Marvin D  Donovan Sr et al"},"object":{"type":"mine","id":"4503677","name":"Rockport Quarry LLC"},"validFrom":"2010-01-27","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4503677|0091135|2010-01-27|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0091135","name":"Marvin D  Donovan Sr et al"},"object":{"type":"operator","id":"0107707","name":"Rockport Quarry, LLC"},"validFrom":"2010-01-27","validTo":"2012-07-26","current":false,"derived":true,"evidenceMineId":"4503677","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4503677|0107707|2010-01-27|0091135|2010-01-27|14639"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0091135","name":"Marvin D  Donovan Jr et al"},"object":{"type":"operator","id":"0107707","name":"Rockport Quarry, LLC"},"validFrom":"2010-01-27","validTo":"2012-07-26","current":false,"derived":true,"evidenceMineId":"4503677","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4503677|0107707|2010-01-27|0091135|2010-01-27|14640"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0126493","name":"Andrews Landshapers"},"object":{"type":"mine","id":"4503677","name":"Rockport Quarry LLC"},"validFrom":"2012-07-27","validTo":"2013-10-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4503677|0126493|2012-07-27|2013-10-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0107621","name":"Andrew  Damerau"},"object":{"type":"mine","id":"4503677","name":"Rockport Quarry LLC"},"validFrom":"2012-07-27","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4503677|0107621|2012-07-27|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0107621","name":"Andrew  Damerau"},"object":{"type":"operator","id":"0126493","name":"Andrews Landshapers"},"validFrom":"2012-07-27","validTo":"2013-10-31","current":false,"derived":true,"evidenceMineId":"4503677","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4503677|0126493|2012-07-27|0107621|2012-07-27|19280"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0107707","name":"Rockport Quarry LLC"},"object":{"type":"mine","id":"4503677","name":"Rockport Quarry LLC"},"validFrom":"2013-11-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4503677|0107707|2013-11-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0091135","name":"Marvin D  Donovan Jr et al"},"object":{"type":"operator","id":"0107707","name":"Rockport Quarry LLC"},"validFrom":"2013-11-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"4503677","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4503677|0107707|2013-11-01|0091135|2010-01-27|14641"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0091135","name":"Marvin D  Donovan Sr et al"},"object":{"type":"operator","id":"0107707","name":"Rockport Quarry LLC"},"validFrom":"2013-11-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"4503677","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4503677|0107707|2013-11-01|0091135|2010-01-27|14642"}}],"coverage":{"historyRecords":5,"edgeCount":10,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4503677","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"}}