{"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":"5100137","name":"Olawalu Cinder Pit"},"operator":{"type":"operator","id":"L03672","name":"Ameron H C & D"},"controller":{"type":"controller","id":"M02948","name":"Ameron International Corp"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M02948","name":"Ameron International Corp"},"object":{"type":"mine","id":"5100137","name":"Olawalu Cinder Pit"},"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":"5100137|M02948|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L03674","name":"Hawaii Dept Of Land & Natural Resources"},"object":{"type":"mine","id":"5100137","name":"Olawalu Cinder Pit"},"validFrom":"1950-01-01","validTo":"1978-12-18","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"5100137|L03674|1950-01-01|1978-12-18"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M02950","name":"Hawaii Dept Of Land & Natural Resources"},"object":{"type":"mine","id":"5100137","name":"Olawalu Cinder Pit"},"validFrom":"1950-01-01","validTo":"1978-12-18","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"5100137|M02950|1950-01-01|1978-12-18"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M02950","name":"Hawaii Dept Of Land & Natural Resources"},"object":{"type":"operator","id":"L03674","name":"Hawaii Dept Of Land & Natural Resources"},"validFrom":"1950-01-01","validTo":"1978-12-18","current":false,"derived":true,"evidenceMineId":"5100137","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"5100137|L03674|1950-01-01|M02950|1950-01-01|127416"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L03672","name":"Ameron H C & D"},"object":{"type":"mine","id":"5100137","name":"Olawalu Cinder Pit"},"validFrom":"1978-12-19","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"5100137|L03672|1978-12-19|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M02948","name":"Ameron International Corp"},"object":{"type":"operator","id":"L03672","name":"Ameron H C & D"},"validFrom":"1978-12-19","validTo":null,"current":true,"derived":true,"evidenceMineId":"5100137","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"5100137|L03672|1978-12-19|M02948|1950-01-01|127414"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"5100137","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"}}