{"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":"1301953","name":"Portable Plant #1"},"operator":{"type":"operator","id":"L09154","name":"Marion County Limestone Company Ltd"},"controller":{"type":"controller","id":"M01165","name":"James H  Dingeman"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L07303","name":"Geery Construction Company"},"object":{"type":"mine","id":"1301953","name":"Portable Plant #1"},"validFrom":"1980-06-01","validTo":"1987-02-18","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1301953|L07303|1980-06-01|1987-02-18"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M05812","name":"Geery Darroll"},"object":{"type":"mine","id":"1301953","name":"Portable Plant #1"},"validFrom":"1980-06-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1301953|M05812|1980-06-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M05812","name":"Geery Darroll"},"object":{"type":"operator","id":"L07303","name":"Geery Construction Company"},"validFrom":"1980-06-01","validTo":"1987-02-18","current":false,"derived":true,"evidenceMineId":"1301953","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1301953|L07303|1980-06-01|M05812|1980-06-01|135444"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L09154","name":"Marion County Limestone Company Ltd"},"object":{"type":"mine","id":"1301953","name":"Portable Plant #1"},"validFrom":"1987-02-19","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1301953|L09154|1987-02-19|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M01165","name":"James H  Dingeman"},"object":{"type":"mine","id":"1301953","name":"Portable Plant #1"},"validFrom":"1987-02-19","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1301953|M01165|1987-02-19|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M01165","name":"James H  Dingeman"},"object":{"type":"operator","id":"L09154","name":"Marion County Limestone Company Ltd"},"validFrom":"1987-02-19","validTo":null,"current":true,"derived":true,"evidenceMineId":"1301953","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1301953|L09154|1987-02-19|M01165|1987-02-19|117164"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1301953","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"}}