{"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":"2300196","name":"ST CHARLES PLANT"},"operator":{"type":"operator","id":"0107425","name":"Lafarge Aggregates Illinois, Inc."},"controller":{"type":"controller","id":"0193740","name":"Amrize Ltd"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L01089","name":"St Charles Quarry Company"},"object":{"type":"mine","id":"2300196","name":"ST CHARLES PLANT"},"validFrom":"1950-01-01","validTo":"1986-12-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2300196|L01089|1950-01-01|1986-12-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00949","name":"Edwin A  Kurtz"},"object":{"type":"mine","id":"2300196","name":"ST CHARLES PLANT"},"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":"2300196|M00949|1950-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00949","name":"Edwin A  Kurtz"},"object":{"type":"operator","id":"L01089","name":"St Charles Quarry Company"},"validFrom":"1950-01-01","validTo":"1986-12-31","current":false,"derived":true,"evidenceMineId":"2300196","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2300196|L01089|1950-01-01|M00949|1950-01-01|116068"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L13887","name":"Lafarge Construction Materials"},"object":{"type":"mine","id":"2300196","name":"ST CHARLES PLANT"},"validFrom":"1987-01-01","validTo":"2001-09-16","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2300196|L13887|1987-01-01|2001-09-16"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M02063","name":"Lafarge S A"},"object":{"type":"mine","id":"2300196","name":"ST CHARLES PLANT"},"validFrom":"1987-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2300196|M02063|1987-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M02063","name":"Lafarge S A"},"object":{"type":"operator","id":"L13887","name":"Lafarge Construction Materials"},"validFrom":"1987-01-01","validTo":"2001-09-16","current":false,"derived":true,"evidenceMineId":"2300196","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2300196|L13887|1987-01-01|M02063|1987-01-01|123266"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M02063","name":"Lafarge S A"},"object":{"type":"mine","id":"2300196","name":"ST CHARLES PLANT"},"validFrom":"2001-07-12","validTo":"2015-07-09","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2300196|M02063|2001-07-12|2015-07-09"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L18663","name":"Lafarge North America Inc."},"object":{"type":"mine","id":"2300196","name":"ST CHARLES PLANT"},"validFrom":"2001-09-17","validTo":"2013-01-08","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2300196|L18663|2001-09-17|2013-01-08"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M02063","name":"Lafarge S A"},"object":{"type":"operator","id":"L18663","name":"Lafarge North America Inc."},"validFrom":"2001-09-17","validTo":"2013-01-08","current":false,"derived":true,"evidenceMineId":"2300196","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2300196|L18663|2001-09-17|M02063|2001-07-12|123424"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M02063","name":"Lafarge S A"},"object":{"type":"mine","id":"2300196","name":"ST CHARLES PLANT"},"validFrom":"2009-06-01","validTo":"2015-07-09","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2300196|M02063|2009-06-01|2015-07-09"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0107425","name":"Lafarge Aggregates Illinois, Inc."},"object":{"type":"mine","id":"2300196","name":"ST CHARLES PLANT"},"validFrom":"2013-01-09","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2300196|0107425|2013-01-09|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M02063","name":"Lafarge S A"},"object":{"type":"operator","id":"0107425","name":"Lafarge Aggregates Illinois, Inc."},"validFrom":"2013-01-09","validTo":"2015-07-09","current":false,"derived":true,"evidenceMineId":"2300196","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2300196|0107425|2013-01-09|M02063|2009-06-01|123582"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0119681","name":"Holcim Ltd"},"object":{"type":"mine","id":"2300196","name":"ST CHARLES PLANT"},"validFrom":"2015-07-10","validTo":"2025-06-22","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2300196|0119681|2015-07-10|2025-06-22"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0119681","name":"Holcim Ltd"},"object":{"type":"operator","id":"0107425","name":"Lafarge Aggregates Illinois, Inc."},"validFrom":"2015-07-10","validTo":"2025-06-22","current":false,"derived":true,"evidenceMineId":"2300196","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2300196|0107425|2013-01-09|0119681|2015-07-10|23061"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0119681","name":"Holcim Ltd"},"object":{"type":"mine","id":"2300196","name":"ST CHARLES PLANT"},"validFrom":"2015-07-10","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2300196|0119681|2015-07-10|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0119681","name":"Holcim Ltd"},"object":{"type":"operator","id":"L18663","name":"Lafarge North America Inc."},"validFrom":"2015-07-10","validTo":"2013-01-08","current":false,"derived":true,"evidenceMineId":"2300196","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2300196|L18663|2001-09-17|0119681|2015-07-10|23226"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0193740","name":"Amrize Ltd"},"object":{"type":"mine","id":"2300196","name":"ST CHARLES PLANT"},"validFrom":"2025-06-23","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2300196|0193740|2025-06-23|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0193740","name":"Amrize Ltd"},"object":{"type":"operator","id":"0107425","name":"Lafarge Aggregates Illinois, Inc."},"validFrom":"2025-06-23","validTo":null,"current":true,"derived":true,"evidenceMineId":"2300196","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2300196|0107425|2013-01-09|0193740|2025-06-23|41350"}}],"coverage":{"historyRecords":7,"edgeCount":18,"intervalAnomalies":1,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"2300196","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"}}