{"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":"2026-10-13T11:19:05.459773+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":"3003103","name":"SAVONA"},"operator":{"type":"operator","id":"L00567","name":"Dalrymple Gravel & Contracting Company Inc"},"controller":{"type":"controller","id":"0115843","name":"David J  Dalrymple"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00480","name":"Dalrymple Holding Corp"},"object":{"type":"mine","id":"3003103","name":"SAVONA"},"validFrom":"1950-01-01","validTo":"2014-10-17","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3003103|M00480|1950-01-01|2014-10-17"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L00567","name":"Dalrymple Gravel & Contracting Company Inc"},"object":{"type":"mine","id":"3003103","name":"SAVONA"},"validFrom":"1993-11-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3003103|L00567|1993-11-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00480","name":"Dalrymple Holding Corp"},"object":{"type":"operator","id":"L00567","name":"Dalrymple Gravel & Contracting Company Inc"},"validFrom":"1993-11-01","validTo":"2014-10-17","current":false,"derived":true,"evidenceMineId":"3003103","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3003103|L00567|1993-11-01|M00480|1950-01-01|111727"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0115843","name":"David J  Dalrymple"},"object":{"type":"mine","id":"3003103","name":"SAVONA"},"validFrom":"2014-10-18","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3003103|0115843|2014-10-18|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0115843","name":"David J  Dalrymple"},"object":{"type":"operator","id":"L00567","name":"Dalrymple Gravel & Contracting Company Inc"},"validFrom":"2014-10-18","validTo":null,"current":true,"derived":true,"evidenceMineId":"3003103","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3003103|L00567|1993-11-01|0115843|2014-10-18|21845"}}],"coverage":{"historyRecords":2,"edgeCount":5,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"3003103","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804,"relationshipSemantics":"valid time; null validTo means current or open-ended in the source"}}