{"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":"3003723","name":"Birch Run Gravel Pit"},"operator":{"type":"operator","id":"0105107","name":"Richard L. Peck Construction Inc."},"controller":{"type":"controller","id":"0088897","name":"Richard L  Peck; Louis S  Woodgie"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"0105107","name":"Richard L. Peck Construction Inc."},"object":{"type":"mine","id":"3003723","name":"Birch Run Gravel Pit"},"validFrom":"2009-10-19","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3003723|0105107|2009-10-19|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0088897","name":"Richard L  Peck et al"},"object":{"type":"mine","id":"3003723","name":"Birch Run Gravel Pit"},"validFrom":"2009-10-19","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3003723|0088897|2009-10-19|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0088897","name":"Richard L  Peck et al"},"object":{"type":"operator","id":"0105107","name":"Richard L. Peck Construction Inc."},"validFrom":"2009-10-19","validTo":null,"current":true,"derived":true,"evidenceMineId":"3003723","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3003723|0105107|2009-10-19|0088897|2009-10-19|14290"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0088897","name":"Louis S  Woodgie et al"},"object":{"type":"operator","id":"0105107","name":"Richard L. Peck Construction Inc."},"validFrom":"2009-10-19","validTo":null,"current":true,"derived":true,"evidenceMineId":"3003723","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3003723|0105107|2009-10-19|0088897|2009-10-19|14291"}}],"coverage":{"historyRecords":2,"edgeCount":4,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"3003723","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"}}