{"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":"1302513","name":"Cantera Stripping Crew"},"operator":{"type":"operator","id":"0154593","name":"Cantera Aggregates"},"controller":{"type":"controller","id":"0137721","name":"Joshua Corey  Kratofil"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"0137721","name":"Joshua Corey  Kratofil"},"object":{"type":"mine","id":"1302513","name":"Cantera Stripping Crew"},"validFrom":"2017-10-11","validTo":"2022-05-22","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1302513|0137721|2017-10-11|2022-05-22"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0169943","name":"Justin A Kratofil et al"},"object":{"type":"mine","id":"1302513","name":"Cantera Stripping Crew"},"validFrom":"2022-05-23","validTo":"2024-06-23","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1302513|0169943|2022-05-23|2024-06-23"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0137721","name":"Joshua Corey  Kratofil"},"object":{"type":"mine","id":"1302513","name":"Cantera Stripping Crew"},"validFrom":"2024-06-24","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1302513|0137721|2024-06-24|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0154593","name":"Cantera Aggregates"},"object":{"type":"mine","id":"1302513","name":"Cantera Stripping Crew"},"validFrom":"2024-06-26","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1302513|0154593|2024-06-26|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0137721","name":"Joshua Corey  Kratofil"},"object":{"type":"operator","id":"0154593","name":"Cantera Aggregates"},"validFrom":"2024-06-26","validTo":"2022-05-22","current":false,"derived":true,"evidenceMineId":"1302513","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1302513|0154593|2024-06-26|0137721|2017-10-11|27835"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0137721","name":"Joshua Corey  Kratofil"},"object":{"type":"operator","id":"0154593","name":"Cantera Aggregates"},"validFrom":"2024-06-26","validTo":null,"current":true,"derived":true,"evidenceMineId":"1302513","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1302513|0154593|2024-06-26|0137721|2024-06-24|27839"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0169943","name":"Justin A Kratofil et al"},"object":{"type":"operator","id":"0154593","name":"Cantera Aggregates"},"validFrom":"2024-06-26","validTo":"2024-06-23","current":false,"derived":true,"evidenceMineId":"1302513","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1302513|0154593|2024-06-26|0169943|2022-05-23|35921"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0169943","name":"Joshua C Kratofil et al"},"object":{"type":"operator","id":"0154593","name":"Cantera Aggregates"},"validFrom":"2024-06-26","validTo":"2024-06-23","current":false,"derived":true,"evidenceMineId":"1302513","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1302513|0154593|2024-06-26|0169943|2022-05-23|35922"}}],"coverage":{"historyRecords":4,"edgeCount":8,"intervalAnomalies":3,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1302513","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"}}