{"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":"4101242","name":"Chico Plant #32"},"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":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L10136","name":"Chico Crushed Stone Inc"},"object":{"type":"mine","id":"4101242","name":"Chico Plant #32"},"validFrom":"1950-01-01","validTo":"1988-05-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4101242|L10136|1950-01-01|1988-05-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M07914","name":"Van C  Cox"},"object":{"type":"mine","id":"4101242","name":"Chico Plant #32"},"validFrom":"1950-01-01","validTo":"1988-05-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4101242|M07914|1950-01-01|1988-05-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M07914","name":"Van C  Cox"},"object":{"type":"operator","id":"L10136","name":"Chico Crushed Stone Inc"},"validFrom":"1950-01-01","validTo":"1988-05-31","current":false,"derived":true,"evidenceMineId":"4101242","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4101242|L10136|1950-01-01|M07914|1950-01-01|142312"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L10135","name":"Chico Crushed Stone Inc"},"object":{"type":"mine","id":"4101242","name":"Chico Plant #32"},"validFrom":"1988-06-01","validTo":"1989-08-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4101242|L10135|1988-06-01|1989-08-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M06014","name":"Tarmac Plc"},"object":{"type":"mine","id":"4101242","name":"Chico Plant #32"},"validFrom":"1988-06-01","validTo":"1989-08-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4101242|M06014|1988-06-01|1989-08-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M06014","name":"Tarmac Plc"},"object":{"type":"operator","id":"L10135","name":"Chico Crushed Stone Inc"},"validFrom":"1988-06-01","validTo":"1989-08-31","current":false,"derived":true,"evidenceMineId":"4101242","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4101242|L10135|1988-06-01|M06014|1988-06-01|135996"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L11223","name":"Chico Crushed Stone Partnership"},"object":{"type":"mine","id":"4101242","name":"Chico Plant #32"},"validFrom":"1989-09-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4101242|L11223|1989-09-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M08689","name":"Pioneer International Ltd  et al"},"object":{"type":"mine","id":"4101242","name":"Chico Plant #32"},"validFrom":"1989-09-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4101242|M08689|1989-09-01|"}},{"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":"1989-09-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"4101242","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4101242|L11223|1989-09-01|M08689|1989-09-01|143881"}},{"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":"1989-09-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"4101242","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4101242|L11223|1989-09-01|M08689|1989-09-01|143882"}}],"coverage":{"historyRecords":4,"edgeCount":10,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4101242","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"}}