{"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":"4300199","name":"Tabor Earth Extractors"},"operator":{"type":"operator","id":"0133353","name":"Tabor Earth Extractors"},"controller":{"type":"controller","id":"0113481","name":"Jerry C  Tabor"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L02710","name":"John H Gross"},"object":{"type":"mine","id":"4300199","name":"Tabor Earth Extractors"},"validFrom":"1950-01-01","validTo":"1996-03-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4300199|L02710|1950-01-01|1996-03-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M02255","name":"John H  Gross"},"object":{"type":"mine","id":"4300199","name":"Tabor Earth Extractors"},"validFrom":"1950-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4300199|M02255|1950-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M02255","name":"John H  Gross"},"object":{"type":"operator","id":"L02710","name":"John H Gross"},"validFrom":"1950-01-01","validTo":"1996-03-31","current":false,"derived":true,"evidenceMineId":"4300199","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4300199|L02710|1950-01-01|M02255|1950-01-01|124527"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L14727","name":"John  Gross Trucking & Excavating"},"object":{"type":"mine","id":"4300199","name":"Tabor Earth Extractors"},"validFrom":"1996-04-01","validTo":"2014-05-04","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4300199|L14727|1996-04-01|2014-05-04"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M11206","name":"Scott  Gross"},"object":{"type":"mine","id":"4300199","name":"Tabor Earth Extractors"},"validFrom":"1996-04-01","validTo":"2012-10-10","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4300199|M11206|1996-04-01|2012-10-10"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M11206","name":"Scott  Gross"},"object":{"type":"operator","id":"L14727","name":"John  Gross Trucking & Excavating"},"validFrom":"1996-04-01","validTo":"2012-10-10","current":false,"derived":true,"evidenceMineId":"4300199","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4300199|L14727|1996-04-01|M11206|1996-04-01|150912"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0106581","name":"Nancy M  Gross"},"object":{"type":"mine","id":"4300199","name":"Tabor Earth Extractors"},"validFrom":"2012-10-11","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4300199|0106581|2012-10-11|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0106581","name":"Nancy M  Gross"},"object":{"type":"operator","id":"L14727","name":"John  Gross Trucking & Excavating"},"validFrom":"2012-10-11","validTo":"2014-05-04","current":false,"derived":true,"evidenceMineId":"4300199","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4300199|L14727|1996-04-01|0106581|2012-10-11|18880"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0133353","name":"Tabor Earth Extractors"},"object":{"type":"mine","id":"4300199","name":"Tabor Earth Extractors"},"validFrom":"2014-05-05","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4300199|0133353|2014-05-05|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0113481","name":"Jerry C  Tabor"},"object":{"type":"mine","id":"4300199","name":"Tabor Earth Extractors"},"validFrom":"2014-05-05","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4300199|0113481|2014-05-05|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0113481","name":"Jerry C  Tabor"},"object":{"type":"operator","id":"0133353","name":"Tabor Earth Extractors"},"validFrom":"2014-05-05","validTo":null,"current":true,"derived":true,"evidenceMineId":"4300199","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4300199|0133353|2014-05-05|0113481|2014-05-05|21216"}}],"coverage":{"historyRecords":4,"edgeCount":11,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4300199","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"}}