{"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":"1400810","name":"Wellsville Quarry"},"operator":{"type":"operator","id":"L00466","name":"Killough Quarries Inc"},"controller":{"type":"controller","id":"M00387","name":"R B  Killough"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00049","name":"Ashland Inc"},"object":{"type":"mine","id":"1400810","name":"Wellsville Quarry"},"validFrom":"1950-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1400810|M00049|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L00466","name":"Killough Quarries Inc"},"object":{"type":"mine","id":"1400810","name":"Wellsville Quarry"},"validFrom":"1950-01-01","validTo":"1980-06-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1400810|L00466|1950-01-01|1980-06-30"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00387","name":"R B  Killough"},"object":{"type":"mine","id":"1400810","name":"Wellsville Quarry"},"validFrom":"1950-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1400810|M00387|1950-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00387","name":"R B  Killough"},"object":{"type":"operator","id":"L00466","name":"Killough Quarries Inc"},"validFrom":"1950-01-01","validTo":"1980-06-30","current":false,"derived":true,"evidenceMineId":"1400810","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1400810|L00466|1950-01-01|M00387|1950-01-01|110509"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L01236","name":"Reno Construction Company"},"object":{"type":"mine","id":"1400810","name":"Wellsville Quarry"},"validFrom":"1980-07-01","validTo":"1981-03-24","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1400810|L01236|1980-07-01|1981-03-24"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00049","name":"Ashland Inc"},"object":{"type":"operator","id":"L01236","name":"Reno Construction Company"},"validFrom":"1980-07-01","validTo":"1981-03-24","current":false,"derived":true,"evidenceMineId":"1400810","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1400810|L01236|1980-07-01|M00049|1950-01-01|102731"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L00466","name":"Killough Quarries Inc"},"object":{"type":"mine","id":"1400810","name":"Wellsville Quarry"},"validFrom":"1981-03-25","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1400810|L00466|1981-03-25|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00387","name":"R B  Killough"},"object":{"type":"operator","id":"L00466","name":"Killough Quarries Inc"},"validFrom":"1981-03-25","validTo":null,"current":true,"derived":true,"evidenceMineId":"1400810","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1400810|L00466|1981-03-25|M00387|1950-01-01|110510"}}],"coverage":{"historyRecords":3,"edgeCount":8,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1400810","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"}}