{"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":"1519015","name":"E4-2"},"operator":{"type":"operator","id":"0175993","name":"Management Consulting Services LLC"},"controller":{"type":"controller","id":"0161421","name":"Mark  LaVerghetta"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C00286","name":"TECO Energy Inc"},"object":{"type":"mine","id":"1519015","name":"E4-2"},"validFrom":"2000-11-17","validTo":"2015-09-20","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519015|C00286|2000-11-17|2015-09-20"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P24542","name":"Perry County Coal, LLC."},"object":{"type":"mine","id":"1519015","name":"E4-2"},"validFrom":"2006-06-30","validTo":"2019-09-26","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519015|P24542|2006-06-30|2019-09-26"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C00286","name":"TECO Energy Inc"},"object":{"type":"operator","id":"P24542","name":"Perry County Coal, LLC."},"validFrom":"2006-06-30","validTo":"2015-09-20","current":false,"derived":true,"evidenceMineId":"1519015","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519015|P24542|2006-06-30|C00286|2000-11-17|45882"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0120801","name":"Cambrian Coal Corp"},"object":{"type":"mine","id":"1519015","name":"E4-2"},"validFrom":"2015-09-21","validTo":"2019-06-15","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519015|0120801|2015-09-21|2019-06-15"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0120801","name":"Cambrian Coal Corp"},"object":{"type":"operator","id":"P24542","name":"Perry County Coal, LLC."},"validFrom":"2015-09-21","validTo":"2019-06-15","current":false,"derived":true,"evidenceMineId":"1519015","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519015|P24542|2006-06-30|0120801|2015-09-21|23544"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0149203","name":"J Mark  Campbell"},"object":{"type":"mine","id":"1519015","name":"E4-2"},"validFrom":"2019-06-16","validTo":"2019-09-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519015|0149203|2019-06-16|2019-09-30"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0149203","name":"J Mark  Campbell"},"object":{"type":"operator","id":"P24542","name":"Perry County Coal, LLC."},"validFrom":"2019-06-16","validTo":"2019-09-26","current":false,"derived":true,"evidenceMineId":"1519015","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519015|P24542|2006-06-30|0149203|2019-06-16|30526"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0175978","name":"Perry County Resources"},"object":{"type":"mine","id":"1519015","name":"E4-2"},"validFrom":"2019-09-27","validTo":"2022-02-14","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519015|0175978|2019-09-27|2022-02-14"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0150901","name":"American Resources Corporation"},"object":{"type":"mine","id":"1519015","name":"E4-2"},"validFrom":"2019-09-27","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519015|0150901|2019-09-27|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0150901","name":"American Resources Corporation"},"object":{"type":"operator","id":"0175978","name":"Perry County Resources"},"validFrom":"2019-09-27","validTo":"2022-02-14","current":false,"derived":true,"evidenceMineId":"1519015","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519015|0175978|2019-09-27|0150901|2019-09-27|31148"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0150901","name":"American Resources Corporation"},"object":{"type":"mine","id":"1519015","name":"E4-2"},"validFrom":"2019-10-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519015|0150901|2019-10-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0150901","name":"American Resources Corporation"},"object":{"type":"operator","id":"P24542","name":"Perry County Coal, LLC."},"validFrom":"2019-10-01","validTo":"2019-09-26","current":false,"derived":true,"evidenceMineId":"1519015","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519015|P24542|2006-06-30|0150901|2019-10-01|31157"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0161421","name":"Mark  LaVerghetta"},"object":{"type":"mine","id":"1519015","name":"E4-2"},"validFrom":"2021-03-11","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519015|0161421|2021-03-11|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0175993","name":"Management Consulting Services LLC"},"object":{"type":"mine","id":"1519015","name":"E4-2"},"validFrom":"2022-02-15","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519015|0175993|2022-02-15|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0161421","name":"Mark  LaVerghetta"},"object":{"type":"operator","id":"0175993","name":"Management Consulting Services LLC"},"validFrom":"2022-02-15","validTo":null,"current":true,"derived":true,"evidenceMineId":"1519015","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519015|0175993|2022-02-15|0161421|2021-03-11|33737"}}],"coverage":{"historyRecords":6,"edgeCount":15,"intervalAnomalies":1,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1519015","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"}}