{"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":"4609577","name":"Evolution"},"operator":{"type":"operator","id":"0165314","name":"Potomac-North, Inc"},"controller":{"type":"controller","id":"0162541","name":"Justin L Simmons; Alexander J Woods"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"0165314","name":"Potomac-North, Inc"},"object":{"type":"mine","id":"4609577","name":"Evolution"},"validFrom":"2019-07-23","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4609577|0165314|2019-07-23|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0149623","name":"Curtis  Layman et al"},"object":{"type":"mine","id":"4609577","name":"Evolution"},"validFrom":"2019-07-23","validTo":"2021-03-11","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4609577|0149623|2019-07-23|2021-03-11"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0149623","name":"Curtis  Layman et al"},"object":{"type":"operator","id":"0165314","name":"Potomac-North, Inc"},"validFrom":"2019-07-23","validTo":"2021-03-11","current":false,"derived":true,"evidenceMineId":"4609577","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4609577|0165314|2019-07-23|0149623|2019-07-23|30758"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0149623","name":"Jannette  Layman et al"},"object":{"type":"operator","id":"0165314","name":"Potomac-North, Inc"},"validFrom":"2019-07-23","validTo":"2021-03-11","current":false,"derived":true,"evidenceMineId":"4609577","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4609577|0165314|2019-07-23|0149623|2019-07-23|30759"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0162541","name":"Justin L Simmons et al"},"object":{"type":"mine","id":"4609577","name":"Evolution"},"validFrom":"2021-03-12","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4609577|0162541|2021-03-12|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0162541","name":"Justin L Simmons et al"},"object":{"type":"operator","id":"0165314","name":"Potomac-North, Inc"},"validFrom":"2021-03-12","validTo":null,"current":true,"derived":true,"evidenceMineId":"4609577","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4609577|0165314|2019-07-23|0162541|2021-03-12|34090"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0162541","name":"Alexander J Woods et al"},"object":{"type":"operator","id":"0165314","name":"Potomac-North, Inc"},"validFrom":"2021-03-12","validTo":null,"current":true,"derived":true,"evidenceMineId":"4609577","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4609577|0165314|2019-07-23|0162541|2021-03-12|34091"}}],"coverage":{"historyRecords":4,"edgeCount":7,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4609577","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"}}