{"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":"0401036","name":"CLEARLAKE LAVA"},"operator":{"type":"operator","id":"L14475","name":"Clearlake Lava Inc"},"controller":{"type":"controller","id":"0153861","name":"Donald W  Van Pelt"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L03019","name":"Red Lava Products Of California"},"object":{"type":"mine","id":"0401036","name":"CLEARLAKE LAVA"},"validFrom":"1950-01-01","validTo":"1979-02-25","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0401036|L03019|1950-01-01|1979-02-25"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M02475","name":"Red Lava Products Of California"},"object":{"type":"mine","id":"0401036","name":"CLEARLAKE LAVA"},"validFrom":"1950-01-01","validTo":"1979-02-25","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0401036|M02475|1950-01-01|1979-02-25"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M02475","name":"Red Lava Products Of California"},"object":{"type":"operator","id":"L03019","name":"Red Lava Products Of California"},"validFrom":"1950-01-01","validTo":"1979-02-25","current":false,"derived":true,"evidenceMineId":"0401036","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0401036|L03019|1950-01-01|M02475|1950-01-01|125634"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L00175","name":"Clearlake Lava"},"object":{"type":"mine","id":"0401036","name":"CLEARLAKE LAVA"},"validFrom":"1979-02-26","validTo":"1994-07-14","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0401036|L00175|1979-02-26|1994-07-14"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M02474","name":"Bill  Van Pelt"},"object":{"type":"mine","id":"0401036","name":"CLEARLAKE LAVA"},"validFrom":"1979-02-26","validTo":"1994-07-14","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0401036|M02474|1979-02-26|1994-07-14"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M02474","name":"Bill  Van Pelt"},"object":{"type":"operator","id":"L00175","name":"Clearlake Lava"},"validFrom":"1979-02-26","validTo":"1994-07-14","current":false,"derived":true,"evidenceMineId":"0401036","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0401036|L00175|1979-02-26|M02474|1979-02-26|125632"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L14475","name":"Clearlake Lava Inc"},"object":{"type":"mine","id":"0401036","name":"CLEARLAKE LAVA"},"validFrom":"1994-07-15","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0401036|L14475|1994-07-15|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M11047","name":"Donald  Van Pelt  et al"},"object":{"type":"mine","id":"0401036","name":"CLEARLAKE LAVA"},"validFrom":"1994-07-15","validTo":"2020-03-11","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0401036|M11047|1994-07-15|2020-03-11"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M11047","name":"Donald  Van Pelt  et al"},"object":{"type":"operator","id":"L14475","name":"Clearlake Lava Inc"},"validFrom":"1994-07-15","validTo":"2020-03-11","current":false,"derived":true,"evidenceMineId":"0401036","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0401036|L14475|1994-07-15|M11047|1994-07-15|150606"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M11047","name":"Beverly  Van Pelt  et al"},"object":{"type":"operator","id":"L14475","name":"Clearlake Lava Inc"},"validFrom":"1994-07-15","validTo":"2020-03-11","current":false,"derived":true,"evidenceMineId":"0401036","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0401036|L14475|1994-07-15|M11047|1994-07-15|150607"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0153861","name":"Donald W  Van Pelt"},"object":{"type":"mine","id":"0401036","name":"CLEARLAKE LAVA"},"validFrom":"2020-03-12","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0401036|0153861|2020-03-12|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0153861","name":"Donald W  Van Pelt"},"object":{"type":"operator","id":"L14475","name":"Clearlake Lava Inc"},"validFrom":"2020-03-12","validTo":null,"current":true,"derived":true,"evidenceMineId":"0401036","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0401036|L14475|1994-07-15|0153861|2020-03-12|31933"}}],"coverage":{"historyRecords":5,"edgeCount":12,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"0401036","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"}}