{"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":"0900224","name":"Ecca Calcium Products"},"operator":{"type":"operator","id":"L10209","name":"Ecca Calcium Products Inc"},"controller":{"type":"controller","id":"M00025","name":"English China Clays PLC"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L02572","name":"Cyprus Thompson Weinman Company"},"object":{"type":"mine","id":"0900224","name":"Ecca Calcium Products"},"validFrom":"1950-01-01","validTo":"1980-09-21","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0900224|L02572|1950-01-01|1980-09-21"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00129","name":"Cyprus Mines Corp"},"object":{"type":"mine","id":"0900224","name":"Ecca Calcium Products"},"validFrom":"1950-01-01","validTo":"1980-09-21","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0900224|M00129|1950-01-01|1980-09-21"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00129","name":"Cyprus Mines Corp"},"object":{"type":"operator","id":"L02572","name":"Cyprus Thompson Weinman Company"},"validFrom":"1950-01-01","validTo":"1980-09-21","current":false,"derived":true,"evidenceMineId":"0900224","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0900224|L02572|1950-01-01|M00129|1950-01-01|104820"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L04522","name":"Cyprus Industrial Minerals Company"},"object":{"type":"mine","id":"0900224","name":"Ecca Calcium Products"},"validFrom":"1980-09-22","validTo":"1988-05-24","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0900224|L04522|1980-09-22|1988-05-24"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M03644","name":"Cyprus Amax Minerals Company"},"object":{"type":"mine","id":"0900224","name":"Ecca Calcium Products"},"validFrom":"1980-09-22","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0900224|M03644|1980-09-22|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M03644","name":"Cyprus Amax Minerals Company"},"object":{"type":"operator","id":"L04522","name":"Cyprus Industrial Minerals Company"},"validFrom":"1980-09-22","validTo":"1988-05-24","current":false,"derived":true,"evidenceMineId":"0900224","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0900224|L04522|1980-09-22|M03644|1980-09-22|129614"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L10209","name":"Ecca Calcium Products Inc"},"object":{"type":"mine","id":"0900224","name":"Ecca Calcium Products"},"validFrom":"1988-05-25","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0900224|L10209|1988-05-25|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00025","name":"English China Clays PLC"},"object":{"type":"mine","id":"0900224","name":"Ecca Calcium Products"},"validFrom":"1988-05-25","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0900224|M00025|1988-05-25|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00025","name":"English China Clays PLC"},"object":{"type":"operator","id":"L10209","name":"Ecca Calcium Products Inc"},"validFrom":"1988-05-25","validTo":null,"current":true,"derived":true,"evidenceMineId":"0900224","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0900224|L10209|1988-05-25|M00025|1988-05-25|102095"}}],"coverage":{"historyRecords":3,"edgeCount":9,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"0900224","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"}}