{"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":"4103414","name":"KEMP QUARRIES"},"operator":{"type":"operator","id":"L13307","name":"Cci Manufacturing"},"controller":{"type":"controller","id":"M10165","name":"Eric  Reinhart"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L13306","name":"Kemp Masonry Materials Inc"},"object":{"type":"mine","id":"4103414","name":"KEMP QUARRIES"},"validFrom":"1986-04-01","validTo":"1993-10-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4103414|L13306|1986-04-01|1993-10-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M10164","name":"W E  Kemp"},"object":{"type":"mine","id":"4103414","name":"KEMP QUARRIES"},"validFrom":"1986-04-01","validTo":"1993-10-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4103414|M10164|1986-04-01|1993-10-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M10164","name":"W E  Kemp"},"object":{"type":"operator","id":"L13306","name":"Kemp Masonry Materials Inc"},"validFrom":"1986-04-01","validTo":"1993-10-31","current":false,"derived":true,"evidenceMineId":"4103414","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4103414|L13306|1986-04-01|M10164|1986-04-01|148551"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L13307","name":"Cci Manufacturing"},"object":{"type":"mine","id":"4103414","name":"KEMP QUARRIES"},"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":"4103414|L13307|1993-11-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M10165","name":"Eric  Reinhart"},"object":{"type":"mine","id":"4103414","name":"KEMP QUARRIES"},"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":"4103414|M10165|1993-11-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M10165","name":"Eric  Reinhart"},"object":{"type":"operator","id":"L13307","name":"Cci Manufacturing"},"validFrom":"1993-11-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"4103414","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4103414|L13307|1993-11-01|M10165|1993-11-01|148552"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4103414","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"}}