{"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":"1516333","name":"Leslie Co #1 Strip"},"operator":{"type":"operator","id":"P16624","name":"Ikerd-Bandy Company Inc"},"controller":{"type":"controller","id":"C12323","name":"James J  Kocian"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C12323","name":"James J  Kocian et al"},"object":{"type":"mine","id":"1516333","name":"Leslie Co #1 Strip"},"validFrom":"1985-02-15","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516333|C12323|1985-02-15|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P19548","name":"Mel-Ash Coal Corp"},"object":{"type":"mine","id":"1516333","name":"Leslie Co #1 Strip"},"validFrom":"1988-03-01","validTo":"1989-10-10","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516333|P19548|1988-03-01|1989-10-10"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C08183","name":"Rookard Jack & Hobert C Hayes"},"object":{"type":"mine","id":"1516333","name":"Leslie Co #1 Strip"},"validFrom":"1988-03-01","validTo":"1989-10-10","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516333|C08183|1988-03-01|1989-10-10"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C08183","name":"Rookard Jack & Hobert C Hayes"},"object":{"type":"operator","id":"P19548","name":"Mel-Ash Coal Corp"},"validFrom":"1988-03-01","validTo":"1989-10-10","current":false,"derived":true,"evidenceMineId":"1516333","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516333|P19548|1988-03-01|C08183|1988-03-01|76636"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P20533","name":"Leslie Energy Inc"},"object":{"type":"mine","id":"1516333","name":"Leslie Co #1 Strip"},"validFrom":"1989-10-11","validTo":"1990-01-18","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516333|P20533|1989-10-11|1990-01-18"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C03622","name":"Darrell  Davis"},"object":{"type":"mine","id":"1516333","name":"Leslie Co #1 Strip"},"validFrom":"1989-10-11","validTo":"1990-01-18","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516333|C03622|1989-10-11|1990-01-18"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C03622","name":"Darrell  Davis"},"object":{"type":"operator","id":"P20533","name":"Leslie Energy Inc"},"validFrom":"1989-10-11","validTo":"1990-01-18","current":false,"derived":true,"evidenceMineId":"1516333","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516333|P20533|1989-10-11|C03622|1989-10-11|63385"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P20796","name":"Leslie Energy Inc"},"object":{"type":"mine","id":"1516333","name":"Leslie Co #1 Strip"},"validFrom":"1990-01-19","validTo":"1990-12-04","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516333|P20796|1990-01-19|1990-12-04"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C14093","name":"Jackson David"},"object":{"type":"mine","id":"1516333","name":"Leslie Co #1 Strip"},"validFrom":"1990-01-19","validTo":"1990-12-04","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516333|C14093|1990-01-19|1990-12-04"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C14093","name":"Jackson David"},"object":{"type":"operator","id":"P20796","name":"Leslie Energy Inc"},"validFrom":"1990-01-19","validTo":"1990-12-04","current":false,"derived":true,"evidenceMineId":"1516333","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516333|P20796|1990-01-19|C14093|1990-01-19|91980"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P16624","name":"Ikerd-Bandy Company Inc"},"object":{"type":"mine","id":"1516333","name":"Leslie Co #1 Strip"},"validFrom":"1990-12-05","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516333|P16624|1990-12-05|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C12323","name":"James J  Kocian et al"},"object":{"type":"operator","id":"P16624","name":"Ikerd-Bandy Company Inc"},"validFrom":"1990-12-05","validTo":null,"current":true,"derived":true,"evidenceMineId":"1516333","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516333|P16624|1990-12-05|C12323|1985-02-15|86617"}}],"coverage":{"historyRecords":4,"edgeCount":12,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1516333","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"}}