{"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":"2026-10-17T05:35:58.500035+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":"4103481","name":"Plant #31"},"operator":{"type":"operator","id":"L11223","name":"Chico Crushed Stone Partnership"},"controller":{"type":"controller","id":"M08689","name":"Lafarge Corp; Pioneer International Ltd"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M06991","name":"Chico Crushed Stone Inc"},"object":{"type":"mine","id":"4103481","name":"Plant #31"},"validFrom":"1986-10-15","validTo":"1989-09-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4103481|M06991|1986-10-15|1989-09-30"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L08839","name":"Associated Crushed Stone"},"object":{"type":"mine","id":"4103481","name":"Plant #31"},"validFrom":"1987-08-01","validTo":"1989-09-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4103481|L08839|1987-08-01|1989-09-30"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M06991","name":"Chico Crushed Stone Inc"},"object":{"type":"operator","id":"L08839","name":"Associated Crushed Stone"},"validFrom":"1987-08-01","validTo":"1989-09-30","current":false,"derived":true,"evidenceMineId":"4103481","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4103481|L08839|1987-08-01|M06991|1986-10-15|139867"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M08689","name":"Pioneer International Ltd  et al"},"object":{"type":"mine","id":"4103481","name":"Plant #31"},"validFrom":"1989-09-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4103481|M08689|1989-09-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L11223","name":"Chico Crushed Stone Partnership"},"object":{"type":"mine","id":"4103481","name":"Plant #31"},"validFrom":"1989-10-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4103481|L11223|1989-10-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M08689","name":"Pioneer International Ltd  et al"},"object":{"type":"operator","id":"L11223","name":"Chico Crushed Stone Partnership"},"validFrom":"1989-10-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"4103481","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4103481|L11223|1989-10-01|M08689|1989-09-01|143920"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M08689","name":"Lafarge Corp et al"},"object":{"type":"operator","id":"L11223","name":"Chico Crushed Stone Partnership"},"validFrom":"1989-10-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"4103481","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4103481|L11223|1989-10-01|M08689|1989-09-01|143921"}}],"coverage":{"historyRecords":3,"edgeCount":7,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4103481","dataSource":"postgres","snapshotId":"2026-10-17T05:35:58.500035+00:00","completedAt":"2026-10-17T06:17:15.228Z","sourceCount":20,"totalRows":15450873,"relationshipSemantics":"valid time; null validTo means current or open-ended in the source"}}