{"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":"1201757","name":"HOOSIER CALCIUM CORP."},"operator":{"type":"operator","id":"L10959","name":"Hoosier Calcium Corp"},"controller":{"type":"controller","id":"M08486","name":"Ian C  King"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L03638","name":"Indiana Cal-Pro Inc"},"object":{"type":"mine","id":"1201757","name":"HOOSIER CALCIUM CORP."},"validFrom":"1979-12-01","validTo":"1989-06-23","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1201757|L03638|1979-12-01|1989-06-23"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M01574","name":"Cowan Stone Company"},"object":{"type":"mine","id":"1201757","name":"HOOSIER CALCIUM CORP."},"validFrom":"1979-12-01","validTo":"1989-06-23","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1201757|M01574|1979-12-01|1989-06-23"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M01574","name":"Cowan Stone Company"},"object":{"type":"operator","id":"L03638","name":"Indiana Cal-Pro Inc"},"validFrom":"1979-12-01","validTo":"1989-06-23","current":false,"derived":true,"evidenceMineId":"1201757","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1201757|L03638|1979-12-01|M01574|1979-12-01|119351"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L10959","name":"Hoosier Calcium Corp"},"object":{"type":"mine","id":"1201757","name":"HOOSIER CALCIUM CORP."},"validFrom":"1989-06-24","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1201757|L10959|1989-06-24|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M08486","name":"Ian C  King"},"object":{"type":"mine","id":"1201757","name":"HOOSIER CALCIUM CORP."},"validFrom":"1989-06-24","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1201757|M08486|1989-06-24|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M08486","name":"Ian C  King"},"object":{"type":"operator","id":"L10959","name":"Hoosier Calcium Corp"},"validFrom":"1989-06-24","validTo":null,"current":true,"derived":true,"evidenceMineId":"1201757","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1201757|L10959|1989-06-24|M08486|1989-06-24|143505"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1201757","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"}}