{"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":"3608284","name":"Whitney Plant (UG)"},"operator":{"type":"operator","id":"L16688","name":"Hanson Aggregates BMC, Inc"},"controller":{"type":"controller","id":"M00004","name":"Heidelberg Materials AG"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M04321","name":"Pioneer International Ltd"},"object":{"type":"mine","id":"3608284","name":"Whitney Plant (UG)"},"validFrom":"1989-01-16","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3608284|M04321|1989-01-16|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L16199","name":"Pioneer Mid-Atlantic Inc"},"object":{"type":"mine","id":"3608284","name":"Whitney Plant (UG)"},"validFrom":"1991-08-01","validTo":"2000-08-03","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3608284|L16199|1991-08-01|2000-08-03"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M04321","name":"Pioneer International Ltd"},"object":{"type":"operator","id":"L16199","name":"Pioneer Mid-Atlantic Inc"},"validFrom":"1991-08-01","validTo":"2000-08-03","current":false,"derived":true,"evidenceMineId":"3608284","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3608284|L16199|1991-08-01|M04321|1989-01-16|131719"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M11007","name":"USS Holdings Inc"},"object":{"type":"mine","id":"3608284","name":"Whitney Plant (UG)"},"validFrom":"1996-03-09","validTo":"2003-07-18","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3608284|M11007|1996-03-09|2003-07-18"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L18009","name":"Hanson Aggregates Pma Inc"},"object":{"type":"mine","id":"3608284","name":"Whitney Plant (UG)"},"validFrom":"2000-08-04","validTo":"2008-12-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3608284|L18009|2000-08-04|2008-12-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00521","name":"Hanson PLC"},"object":{"type":"mine","id":"3608284","name":"Whitney Plant (UG)"},"validFrom":"2000-08-04","validTo":"2007-08-22","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3608284|M00521|2000-08-04|2007-08-22"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00521","name":"Hanson PLC"},"object":{"type":"operator","id":"L18009","name":"Hanson Aggregates Pma Inc"},"validFrom":"2000-08-04","validTo":"2007-08-22","current":false,"derived":true,"evidenceMineId":"3608284","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3608284|L18009|2000-08-04|M00521|2000-08-04|112605"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00521","name":"Hanson PLC"},"object":{"type":"mine","id":"3608284","name":"Whitney Plant (UG)"},"validFrom":"2003-07-19","validTo":"2007-08-22","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3608284|M00521|2003-07-19|2007-08-22"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00004","name":"Heidelberg Materials AG"},"object":{"type":"mine","id":"3608284","name":"Whitney Plant (UG)"},"validFrom":"2007-08-23","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3608284|M00004|2007-08-23|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00004","name":"Heidelberg Materials AG"},"object":{"type":"operator","id":"L18009","name":"Hanson Aggregates Pma Inc"},"validFrom":"2007-08-23","validTo":"2008-12-31","current":false,"derived":true,"evidenceMineId":"3608284","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3608284|L18009|2000-08-04|M00004|2007-08-23|100972"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L16688","name":"Hanson Aggregates BMC, Inc"},"object":{"type":"mine","id":"3608284","name":"Whitney Plant (UG)"},"validFrom":"2009-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3608284|L16688|2009-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00004","name":"Heidelberg Materials AG"},"object":{"type":"operator","id":"L16688","name":"Hanson Aggregates BMC, Inc"},"validFrom":"2009-01-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"3608284","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3608284|L16688|2009-01-01|M00004|2007-08-23|100973"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00521","name":"Hanson PLC"},"object":{"type":"operator","id":"L16688","name":"Hanson Aggregates BMC, Inc"},"validFrom":"2009-01-01","validTo":"2007-08-22","current":false,"derived":true,"evidenceMineId":"3608284","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3608284|L16688|2009-01-01|M00521|2003-07-19|112677"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M11007","name":"USS Holdings Inc"},"object":{"type":"operator","id":"L16688","name":"Hanson Aggregates BMC, Inc"},"validFrom":"2009-01-01","validTo":"2003-07-18","current":false,"derived":true,"evidenceMineId":"3608284","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3608284|L16688|2009-01-01|M11007|1996-03-09|150453"}}],"coverage":{"historyRecords":6,"edgeCount":14,"intervalAnomalies":2,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"3608284","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"}}