{"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":"3600125","name":"KEYSTONE CEMENT COMPANY"},"operator":{"type":"operator","id":"L17330","name":"Keystone Cement Company"},"controller":{"type":"controller","id":"0139981","name":"Elementia Materiales"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L07883","name":"Keystone Cement Company"},"object":{"type":"mine","id":"3600125","name":"KEYSTONE CEMENT COMPANY"},"validFrom":"1950-01-01","validTo":"1994-10-05","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3600125|L07883|1950-01-01|1994-10-05"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M02791","name":"Giant Group Ltd"},"object":{"type":"mine","id":"3600125","name":"KEYSTONE CEMENT COMPANY"},"validFrom":"1950-01-01","validTo":"1994-10-05","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3600125|M02791|1950-01-01|1994-10-05"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M02791","name":"Giant Group Ltd"},"object":{"type":"operator","id":"L07883","name":"Keystone Cement Company"},"validFrom":"1950-01-01","validTo":"1994-10-05","current":false,"derived":true,"evidenceMineId":"3600125","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3600125|L07883|1950-01-01|M02791|1950-01-01|126902"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L14463","name":"Keystone Cement Company"},"object":{"type":"mine","id":"3600125","name":"KEYSTONE CEMENT COMPANY"},"validFrom":"1994-10-06","validTo":"1999-12-09","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3600125|L14463|1994-10-06|1999-12-09"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M11020","name":"Giant Cement Holding Inc"},"object":{"type":"mine","id":"3600125","name":"KEYSTONE CEMENT COMPANY"},"validFrom":"1994-10-06","validTo":"1999-12-09","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3600125|M11020|1994-10-06|1999-12-09"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M11020","name":"Giant Cement Holding Inc"},"object":{"type":"operator","id":"L14463","name":"Keystone Cement Company"},"validFrom":"1994-10-06","validTo":"1999-12-09","current":false,"derived":true,"evidenceMineId":"3600125","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3600125|L14463|1994-10-06|M11020|1994-10-06|150526"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L17330","name":"Keystone Cement Company"},"object":{"type":"mine","id":"3600125","name":"KEYSTONE CEMENT COMPANY"},"validFrom":"1999-12-10","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3600125|L17330|1999-12-10|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M13214","name":"Cementos Portland Valderrivas S A"},"object":{"type":"mine","id":"3600125","name":"KEYSTONE CEMENT COMPANY"},"validFrom":"1999-12-10","validTo":"2016-10-25","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3600125|M13214|1999-12-10|2016-10-25"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M13214","name":"Cementos Portland Valderrivas S A"},"object":{"type":"operator","id":"L17330","name":"Keystone Cement Company"},"validFrom":"1999-12-10","validTo":"2016-10-25","current":false,"derived":true,"evidenceMineId":"3600125","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3600125|L17330|1999-12-10|M13214|1999-12-10|155756"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0139981","name":"Elementia Materiales"},"object":{"type":"mine","id":"3600125","name":"KEYSTONE CEMENT COMPANY"},"validFrom":"2016-10-26","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3600125|0139981|2016-10-26|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0139981","name":"Elementia Materiales"},"object":{"type":"operator","id":"L17330","name":"Keystone Cement Company"},"validFrom":"2016-10-26","validTo":null,"current":true,"derived":true,"evidenceMineId":"3600125","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3600125|L17330|1999-12-10|0139981|2016-10-26|28356"}}],"coverage":{"historyRecords":4,"edgeCount":11,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"3600125","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"}}