{"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":"1500062","name":"Underground Black River Operation"},"operator":{"type":"operator","id":"0050945","name":"Carmeuse Lime and Stone Inc"},"controller":{"type":"controller","id":"M10266","name":"Carmeuse Holding SA"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L00927","name":"Black River Lime Company"},"object":{"type":"mine","id":"1500062","name":"Underground Black River Operation"},"validFrom":"1950-01-01","validTo":"1986-05-21","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1500062|L00927|1950-01-01|1986-05-21"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00170","name":"LTV Corp"},"object":{"type":"mine","id":"1500062","name":"Underground Black River Operation"},"validFrom":"1950-01-01","validTo":"1986-05-21","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1500062|M00170|1950-01-01|1986-05-21"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00170","name":"LTV Corp"},"object":{"type":"operator","id":"L00927","name":"Black River Lime Company"},"validFrom":"1950-01-01","validTo":"1986-05-21","current":false,"derived":true,"evidenceMineId":"1500062","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1500062|L00927|1950-01-01|M00170|1950-01-01|105542"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00223","name":"Dravo Corp"},"object":{"type":"mine","id":"1500062","name":"Underground Black River Operation"},"validFrom":"1950-01-01","validTo":"1998-11-24","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1500062|M00223|1950-01-01|1998-11-24"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L00278","name":"Dravo Lime Company"},"object":{"type":"mine","id":"1500062","name":"Underground Black River Operation"},"validFrom":"1986-05-22","validTo":"1998-10-25","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1500062|L00278|1986-05-22|1998-10-25"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00223","name":"Dravo Corp"},"object":{"type":"operator","id":"L00278","name":"Dravo Lime Company"},"validFrom":"1986-05-22","validTo":"1998-10-25","current":false,"derived":true,"evidenceMineId":"1500062","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1500062|L00278|1986-05-22|M00223|1950-01-01|107669"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M10266","name":"Carmeuse Holding SA"},"object":{"type":"mine","id":"1500062","name":"Underground Black River Operation"},"validFrom":"1997-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1500062|M10266|1997-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L16823","name":"Dravo Lime Inc"},"object":{"type":"mine","id":"1500062","name":"Underground Black River Operation"},"validFrom":"1998-10-26","validTo":"2002-06-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1500062|L16823|1998-10-26|2002-06-30"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M12849","name":"Carmeuse Holding SA"},"object":{"type":"mine","id":"1500062","name":"Underground Black River Operation"},"validFrom":"1998-10-26","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1500062|M12849|1998-10-26|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M12849","name":"Carmeuse Holding SA"},"object":{"type":"operator","id":"L16823","name":"Dravo Lime Inc"},"validFrom":"1998-10-26","validTo":"2002-06-30","current":false,"derived":true,"evidenceMineId":"1500062","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1500062|L16823|1998-10-26|M12849|1998-10-26|154735"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M12849","name":"Lafarge SA"},"object":{"type":"operator","id":"L16823","name":"Dravo Lime Inc"},"validFrom":"1998-10-26","validTo":"2002-06-30","current":false,"derived":true,"evidenceMineId":"1500062","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1500062|L16823|1998-10-26|M12849|1998-10-26|154736"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M12849","name":"Carmeuse Holding SA"},"object":{"type":"mine","id":"1500062","name":"Underground Black River Operation"},"validFrom":"2002-06-20","validTo":"2015-07-14","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1500062|M12849|2002-06-20|2015-07-14"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L14947","name":"Carmeuse Lime"},"object":{"type":"mine","id":"1500062","name":"Underground Black River Operation"},"validFrom":"2002-07-01","validTo":"2003-03-16","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1500062|L14947|2002-07-01|2003-03-16"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M10266","name":"Carmeuse Holding SA"},"object":{"type":"operator","id":"L14947","name":"Carmeuse Lime"},"validFrom":"2002-07-01","validTo":"2003-03-16","current":false,"derived":true,"evidenceMineId":"1500062","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1500062|L14947|2002-07-01|M10266|1997-01-01|148752"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0050945","name":"Carmeuse Lime and Stone Inc"},"object":{"type":"mine","id":"1500062","name":"Underground Black River Operation"},"validFrom":"2003-03-17","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1500062|0050945|2003-03-17|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M12849","name":"Carmeuse Holding SA"},"object":{"type":"operator","id":"0050945","name":"Carmeuse Lime and Stone Inc"},"validFrom":"2003-03-17","validTo":"2015-07-14","current":false,"derived":true,"evidenceMineId":"1500062","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1500062|0050945|2003-03-17|M12849|2002-06-20|154763"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M12849","name":"Lafarge SA"},"object":{"type":"operator","id":"0050945","name":"Carmeuse Lime and Stone Inc"},"validFrom":"2003-03-17","validTo":"2015-07-14","current":false,"derived":true,"evidenceMineId":"1500062","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1500062|0050945|2003-03-17|M12849|2002-06-20|154764"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M10266","name":"Carmeuse Holding SA"},"object":{"type":"mine","id":"1500062","name":"Underground Black River Operation"},"validFrom":"2015-07-15","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1500062|M10266|2015-07-15|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M10266","name":"Carmeuse Holding SA"},"object":{"type":"operator","id":"0050945","name":"Carmeuse Lime and Stone Inc"},"validFrom":"2015-07-15","validTo":null,"current":true,"derived":true,"evidenceMineId":"1500062","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1500062|0050945|2003-03-17|M10266|2015-07-15|148821"}}],"coverage":{"historyRecords":8,"edgeCount":19,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1500062","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"}}