{"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":"5000494","name":"Pete Ludwig Gravel Pit - Section 1"},"operator":{"type":"operator","id":"L02664","name":"Bruce D Morley-Contractor"},"controller":{"type":"controller","id":"M02234","name":"Bruce D Morley"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L00916","name":"Belardi & Schneider Inc"},"object":{"type":"mine","id":"5000494","name":"Pete Ludwig Gravel Pit - Section 1"},"validFrom":"1950-01-01","validTo":"1978-10-25","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"5000494|L00916|1950-01-01|1978-10-25"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00776","name":"Schneider Charles J Et Al"},"object":{"type":"mine","id":"5000494","name":"Pete Ludwig Gravel Pit - Section 1"},"validFrom":"1950-01-01","validTo":"1978-10-25","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"5000494|M00776|1950-01-01|1978-10-25"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00776","name":"Schneider Charles J Et Al"},"object":{"type":"operator","id":"L00916","name":"Belardi & Schneider Inc"},"validFrom":"1950-01-01","validTo":"1978-10-25","current":false,"derived":true,"evidenceMineId":"5000494","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"5000494|L00916|1950-01-01|M00776|1950-01-01|114779"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L02664","name":"Bruce D Morley-Contractor"},"object":{"type":"mine","id":"5000494","name":"Pete Ludwig Gravel Pit - Section 1"},"validFrom":"1978-10-26","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"5000494|L02664|1978-10-26|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M02234","name":"Bruce D Morley"},"object":{"type":"mine","id":"5000494","name":"Pete Ludwig Gravel Pit - Section 1"},"validFrom":"1978-10-26","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"5000494|M02234|1978-10-26|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M02234","name":"Bruce D Morley"},"object":{"type":"operator","id":"L02664","name":"Bruce D Morley-Contractor"},"validFrom":"1978-10-26","validTo":null,"current":true,"derived":true,"evidenceMineId":"5000494","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"5000494|L02664|1978-10-26|M02234|1978-10-26|124473"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"5000494","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"}}