{"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":"2026-10-13T11:19:05.459773+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":"1519219","name":"Town Flats Surface"},"operator":{"type":"operator","id":"0141553","name":"Nepernine Mining, Inc."},"controller":{"type":"controller","id":"0112203","name":"Jan M Berkowitz"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C15949","name":"Anthony  Frederick et al"},"object":{"type":"mine","id":"1519219","name":"Town Flats Surface"},"validFrom":"2000-09-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519219|C15949|2000-09-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P24445","name":"Associated Contracting LLC"},"object":{"type":"mine","id":"1519219","name":"Town Flats Surface"},"validFrom":"2008-05-05","validTo":"2009-10-04","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519219|P24445|2008-05-05|2009-10-04"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C15949","name":"Anthony  Frederick et al"},"object":{"type":"operator","id":"P24445","name":"Associated Contracting LLC"},"validFrom":"2008-05-05","validTo":"2009-10-04","current":false,"derived":true,"evidenceMineId":"1519219","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519219|P24445|2008-05-05|C15949|2000-09-01|97783"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C15949","name":"Rifle Coal Company et al"},"object":{"type":"operator","id":"P24445","name":"Associated Contracting LLC"},"validFrom":"2008-05-05","validTo":"2009-10-04","current":false,"derived":true,"evidenceMineId":"1519219","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519219|P24445|2008-05-05|C15949|2000-09-01|97784"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0072411","name":"U S Coal Corporation"},"object":{"type":"mine","id":"1519219","name":"Town Flats Surface"},"validFrom":"2009-07-21","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519219|0072411|2009-07-21|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0102705","name":"Licking River Mining, LLC"},"object":{"type":"mine","id":"1519219","name":"Town Flats Surface"},"validFrom":"2009-10-05","validTo":"2015-10-21","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519219|0102705|2009-10-05|2015-10-21"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0072411","name":"U S Coal Corporation"},"object":{"type":"operator","id":"0102705","name":"Licking River Mining, LLC"},"validFrom":"2009-10-05","validTo":"2015-10-21","current":false,"derived":true,"evidenceMineId":"1519219","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519219|0102705|2009-10-05|0072411|2009-07-21|11218"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0112203","name":"Jan M Berkowitz"},"object":{"type":"mine","id":"1519219","name":"Town Flats Surface"},"validFrom":"2015-10-13","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519219|0112203|2015-10-13|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0141553","name":"Nepernine Mining, Inc."},"object":{"type":"mine","id":"1519219","name":"Town Flats Surface"},"validFrom":"2015-10-22","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519219|0141553|2015-10-22|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0112203","name":"Jan M Berkowitz"},"object":{"type":"operator","id":"0141553","name":"Nepernine Mining, Inc."},"validFrom":"2015-10-22","validTo":null,"current":true,"derived":true,"evidenceMineId":"1519219","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519219|0141553|2015-10-22|0112203|2015-10-13|20827"}}],"coverage":{"historyRecords":4,"edgeCount":10,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1519219","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804,"relationshipSemantics":"valid time; null validTo means current or open-ended in the source"}}