{"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":"4105361","name":"JARCO SANDS LLC"},"operator":{"type":"operator","id":"0206314","name":"JARCO SANDS LLC"},"controller":{"type":"controller","id":"0197161","name":"J & S Materials"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"0157533","name":"J W Sands LLC"},"object":{"type":"mine","id":"4105361","name":"JARCO SANDS LLC"},"validFrom":"2018-05-01","validTo":"2025-12-18","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4105361|0157533|2018-05-01|2025-12-18"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0141463","name":"James D Walker"},"object":{"type":"mine","id":"4105361","name":"JARCO SANDS LLC"},"validFrom":"2018-05-01","validTo":"2022-12-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4105361|0141463|2018-05-01|2022-12-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0141463","name":"James D Walker"},"object":{"type":"operator","id":"0157533","name":"J W Sands LLC"},"validFrom":"2018-05-01","validTo":"2022-12-31","current":false,"derived":true,"evidenceMineId":"4105361","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4105361|0157533|2018-05-01|0141463|2018-05-01|28641"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0174741","name":"Mateo  Hernandez et al"},"object":{"type":"mine","id":"4105361","name":"JARCO SANDS LLC"},"validFrom":"2023-01-01","validTo":"2023-05-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4105361|0174741|2023-01-01|2023-05-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0174741","name":"Mateo  Hernandez et al"},"object":{"type":"operator","id":"0157533","name":"J W Sands LLC"},"validFrom":"2023-01-01","validTo":"2023-05-31","current":false,"derived":true,"evidenceMineId":"4105361","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4105361|0157533|2018-05-01|0174741|2023-01-01|37180"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0174741","name":"Justin  Renfro et al"},"object":{"type":"operator","id":"0157533","name":"J W Sands LLC"},"validFrom":"2023-01-01","validTo":"2023-05-31","current":false,"derived":true,"evidenceMineId":"4105361","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4105361|0157533|2018-05-01|0174741|2023-01-01|37181"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0185061","name":"Mateo  Hernandez"},"object":{"type":"mine","id":"4105361","name":"JARCO SANDS LLC"},"validFrom":"2023-06-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4105361|0185061|2023-06-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0185061","name":"Mateo  Hernandez"},"object":{"type":"operator","id":"0157533","name":"J W Sands LLC"},"validFrom":"2023-06-01","validTo":"2025-12-18","current":false,"derived":true,"evidenceMineId":"4105361","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4105361|0157533|2018-05-01|0185061|2023-06-01|39523"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0206314","name":"JARCO SANDS LLC"},"object":{"type":"mine","id":"4105361","name":"JARCO SANDS LLC"},"validFrom":"2025-12-19","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4105361|0206314|2025-12-19|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0197161","name":"J & S Materials"},"object":{"type":"mine","id":"4105361","name":"JARCO SANDS LLC"},"validFrom":"2025-12-19","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4105361|0197161|2025-12-19|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0197161","name":"J & S Materials"},"object":{"type":"operator","id":"0206314","name":"JARCO SANDS LLC"},"validFrom":"2025-12-19","validTo":null,"current":true,"derived":true,"evidenceMineId":"4105361","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4105361|0206314|2025-12-19|0197161|2025-12-19|42072"}}],"coverage":{"historyRecords":5,"edgeCount":11,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4105361","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"}}