{"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":"1601527","name":"S & C PLANT"},"operator":{"type":"operator","id":"0196073","name":"SIMMONS AND CROWE FARMS, LLC"},"controller":{"type":"controller","id":"0185261","name":"Michael  Simmons; Heather  Simmons"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M30754","name":"George H  Wilson  et al"},"object":{"type":"mine","id":"1601527","name":"S & C PLANT"},"validFrom":"1988-09-01","validTo":"2023-01-09","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1601527|M30754|1988-09-01|2023-01-09"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L30754","name":"Barriere Construction Company LLC"},"object":{"type":"mine","id":"1601527","name":"S & C PLANT"},"validFrom":"2012-07-17","validTo":"2024-06-04","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1601527|L30754|2012-07-17|2024-06-04"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M30754","name":"George H  Wilson  et al"},"object":{"type":"operator","id":"L30754","name":"Barriere Construction Company LLC"},"validFrom":"2012-07-17","validTo":"2023-01-09","current":false,"derived":true,"evidenceMineId":"1601527","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1601527|L30754|2012-07-17|M30754|1988-09-01|158970"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M30754","name":"Peter A  Wilson  et al"},"object":{"type":"operator","id":"L30754","name":"Barriere Construction Company LLC"},"validFrom":"2012-07-17","validTo":"2023-01-09","current":false,"derived":true,"evidenceMineId":"1601527","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1601527|L30754|2012-07-17|M30754|1988-09-01|158971"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M06183","name":"CRH PLC"},"object":{"type":"mine","id":"1601527","name":"S & C PLANT"},"validFrom":"2023-01-10","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1601527|M06183|2023-01-10|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M06183","name":"CRH PLC"},"object":{"type":"operator","id":"L30754","name":"Barriere Construction Company LLC"},"validFrom":"2023-01-10","validTo":"2024-06-04","current":false,"derived":true,"evidenceMineId":"1601527","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1601527|L30754|2012-07-17|M06183|2023-01-10|137807"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0196073","name":"SIMMONS AND CROWE FARMS, LLC"},"object":{"type":"mine","id":"1601527","name":"S & C PLANT"},"validFrom":"2024-06-05","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1601527|0196073|2024-06-05|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0185261","name":"Heather  Simmons et al"},"object":{"type":"mine","id":"1601527","name":"S & C PLANT"},"validFrom":"2024-06-05","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1601527|0185261|2024-06-05|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0185261","name":"Heather  Simmons et al"},"object":{"type":"operator","id":"0196073","name":"SIMMONS AND CROWE FARMS, LLC"},"validFrom":"2024-06-05","validTo":null,"current":true,"derived":true,"evidenceMineId":"1601527","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1601527|0196073|2024-06-05|0185261|2024-06-05|39542"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0185261","name":"Michael  Simmons et al"},"object":{"type":"operator","id":"0196073","name":"SIMMONS AND CROWE FARMS, LLC"},"validFrom":"2024-06-05","validTo":null,"current":true,"derived":true,"evidenceMineId":"1601527","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1601527|0196073|2024-06-05|0185261|2024-06-05|39543"}}],"coverage":{"historyRecords":5,"edgeCount":10,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1601527","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"}}