{"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":"0404758","name":"EAGLE VALLEY AGGREGATES"},"operator":{"type":"operator","id":"L17823","name":"Martin Marietta Southern California Aggregates,LLC"},"controller":{"type":"controller","id":"M00174","name":"Martin Marietta Materials Inc"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L10093","name":"Santa Ana River Rock Company"},"object":{"type":"mine","id":"0404758","name":"EAGLE VALLEY AGGREGATES"},"validFrom":"1985-08-01","validTo":"1987-12-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0404758|L10093|1985-08-01|1987-12-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M07887","name":"Nicholas S  Mitchell"},"object":{"type":"mine","id":"0404758","name":"EAGLE VALLEY AGGREGATES"},"validFrom":"1985-08-01","validTo":"1987-12-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0404758|M07887|1985-08-01|1987-12-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M07887","name":"Nicholas S  Mitchell"},"object":{"type":"operator","id":"L10093","name":"Santa Ana River Rock Company"},"validFrom":"1985-08-01","validTo":"1987-12-31","current":false,"derived":true,"evidenceMineId":"0404758","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0404758|L10093|1985-08-01|M07887|1985-08-01|142158"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00521","name":"Hanson PLC"},"object":{"type":"mine","id":"0404758","name":"EAGLE VALLEY AGGREGATES"},"validFrom":"1987-05-01","validTo":"2007-08-22","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0404758|M00521|1987-05-01|2007-08-22"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L12478","name":"Boral Resources Inc"},"object":{"type":"mine","id":"0404758","name":"EAGLE VALLEY AGGREGATES"},"validFrom":"1988-01-01","validTo":"1995-06-14","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0404758|L12478|1988-01-01|1995-06-14"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00202","name":"Boral Limited"},"object":{"type":"mine","id":"0404758","name":"EAGLE VALLEY AGGREGATES"},"validFrom":"1988-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0404758|M00202|1988-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00202","name":"Boral Limited"},"object":{"type":"operator","id":"L12478","name":"Boral Resources Inc"},"validFrom":"1988-01-01","validTo":"1995-06-14","current":false,"derived":true,"evidenceMineId":"0404758","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0404758|L12478|1988-01-01|M00202|1988-01-01|107351"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00521","name":"Hanson PLC"},"object":{"type":"mine","id":"0404758","name":"EAGLE VALLEY AGGREGATES"},"validFrom":"1988-11-14","validTo":"2007-08-22","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0404758|M00521|1988-11-14|2007-08-22"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L16389","name":"Hanson Aggregates Pacific Southwest Inc"},"object":{"type":"mine","id":"0404758","name":"EAGLE VALLEY AGGREGATES"},"validFrom":"1995-06-15","validTo":"2021-09-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0404758|L16389|1995-06-15|2021-09-30"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00521","name":"Hanson PLC"},"object":{"type":"operator","id":"L16389","name":"Hanson Aggregates Pacific Southwest Inc"},"validFrom":"1995-06-15","validTo":"2007-08-22","current":false,"derived":true,"evidenceMineId":"0404758","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0404758|L16389|1995-06-15|M00521|1987-05-01|112098"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00004","name":"Heidelberg Materials AG"},"object":{"type":"mine","id":"0404758","name":"EAGLE VALLEY AGGREGATES"},"validFrom":"2007-08-23","validTo":"2021-09-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0404758|M00004|2007-08-23|2021-09-30"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00004","name":"Heidelberg Materials AG"},"object":{"type":"mine","id":"0404758","name":"EAGLE VALLEY AGGREGATES"},"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":"0404758|M00004|2007-08-23|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00004","name":"Heidelberg Materials AG"},"object":{"type":"operator","id":"L16389","name":"Hanson Aggregates Pacific Southwest Inc"},"validFrom":"2007-08-23","validTo":"2021-09-30","current":false,"derived":true,"evidenceMineId":"0404758","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0404758|L16389|1995-06-15|M00004|2007-08-23|100694"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L17823","name":"Martin Marietta Southern California Aggregates,LLC"},"object":{"type":"mine","id":"0404758","name":"EAGLE VALLEY AGGREGATES"},"validFrom":"2021-10-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0404758|L17823|2021-10-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00004","name":"Heidelberg Materials AG"},"object":{"type":"operator","id":"L17823","name":"Martin Marietta Southern California Aggregates,LLC"},"validFrom":"2021-10-01","validTo":"2021-09-30","current":false,"derived":true,"evidenceMineId":"0404758","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0404758|L17823|2021-10-01|M00004|2007-08-23|100626"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00174","name":"Martin Marietta Materials Inc"},"object":{"type":"mine","id":"0404758","name":"EAGLE VALLEY AGGREGATES"},"validFrom":"2021-10-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0404758|M00174|2021-10-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00174","name":"Martin Marietta Materials Inc"},"object":{"type":"operator","id":"L17823","name":"Martin Marietta Southern California Aggregates,LLC"},"validFrom":"2021-10-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"0404758","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0404758|L17823|2021-10-01|M00174|2021-10-01|106594"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00521","name":"Hanson PLC"},"object":{"type":"operator","id":"L17823","name":"Martin Marietta Southern California Aggregates,LLC"},"validFrom":"2021-10-01","validTo":"2007-08-22","current":false,"derived":true,"evidenceMineId":"0404758","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0404758|L17823|2021-10-01|M00521|1988-11-14|112126"}}],"coverage":{"historyRecords":7,"edgeCount":18,"intervalAnomalies":2,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"0404758","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"}}