{"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":"1516600","name":"#1"},"operator":{"type":"operator","id":"P22308","name":"Duke Coal Inc"},"controller":{"type":"controller","id":"C14824","name":"Chester Adams"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C12946","name":"Riley Ronald Et Al"},"object":{"type":"mine","id":"1516600","name":"#1"},"validFrom":"1987-03-01","validTo":"1990-05-23","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516600|C12946|1987-03-01|1990-05-23"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C13625","name":"Elliott Gary Et Al"},"object":{"type":"mine","id":"1516600","name":"#1"},"validFrom":"1988-11-09","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516600|C13625|1988-11-09|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P18627","name":"Elijah Coal Company"},"object":{"type":"mine","id":"1516600","name":"#1"},"validFrom":"1989-03-01","validTo":"1990-05-23","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516600|P18627|1989-03-01|1990-05-23"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C12946","name":"Riley Ronald Et Al"},"object":{"type":"operator","id":"P18627","name":"Elijah Coal Company"},"validFrom":"1989-03-01","validTo":"1990-05-23","current":false,"derived":true,"evidenceMineId":"1516600","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516600|P18627|1989-03-01|C12946|1987-03-01|88221"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C13830","name":"Warfield Gary & Jerry"},"object":{"type":"mine","id":"1516600","name":"#1"},"validFrom":"1989-05-03","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516600|C13830|1989-05-03|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P20287","name":"G & M Coal Company"},"object":{"type":"mine","id":"1516600","name":"#1"},"validFrom":"1990-05-24","validTo":"1990-07-01","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516600|P20287|1990-05-24|1990-07-01"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C13830","name":"Warfield Gary & Jerry"},"object":{"type":"operator","id":"P20287","name":"G & M Coal Company"},"validFrom":"1990-05-24","validTo":"1990-07-01","current":false,"derived":true,"evidenceMineId":"1516600","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516600|P20287|1990-05-24|C13830|1989-05-03|91256"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P19940","name":"Amy Coal Company"},"object":{"type":"mine","id":"1516600","name":"#1"},"validFrom":"1990-07-02","validTo":"1992-10-19","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516600|P19940|1990-07-02|1992-10-19"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C13625","name":"Elliott Gary Et Al"},"object":{"type":"operator","id":"P19940","name":"Amy Coal Company"},"validFrom":"1990-07-02","validTo":"1992-10-19","current":false,"derived":true,"evidenceMineId":"1516600","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516600|P19940|1990-07-02|C13625|1988-11-09|90650"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P22131","name":"Patterson Equipment"},"object":{"type":"mine","id":"1516600","name":"#1"},"validFrom":"1992-10-20","validTo":"1993-01-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516600|P22131|1992-10-20|1993-01-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C14739","name":"Patterson Dan"},"object":{"type":"mine","id":"1516600","name":"#1"},"validFrom":"1992-10-20","validTo":"1993-01-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516600|C14739|1992-10-20|1993-01-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C14739","name":"Patterson Dan"},"object":{"type":"operator","id":"P22131","name":"Patterson Equipment"},"validFrom":"1992-10-20","validTo":"1993-01-31","current":false,"derived":true,"evidenceMineId":"1516600","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516600|P22131|1992-10-20|C14739|1992-10-20|93748"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P22204","name":"Poor Man Coal Company"},"object":{"type":"mine","id":"1516600","name":"#1"},"validFrom":"1993-02-01","validTo":"1993-04-20","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516600|P22204|1993-02-01|1993-04-20"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C14777","name":"Jones Hugh Jr Et Al"},"object":{"type":"mine","id":"1516600","name":"#1"},"validFrom":"1993-02-01","validTo":"1993-04-20","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516600|C14777|1993-02-01|1993-04-20"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C14777","name":"Jones Hugh Jr Et Al"},"object":{"type":"operator","id":"P22204","name":"Poor Man Coal Company"},"validFrom":"1993-02-01","validTo":"1993-04-20","current":false,"derived":true,"evidenceMineId":"1516600","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516600|P22204|1993-02-01|C14777|1993-02-01|93863"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P22308","name":"Duke Coal Inc"},"object":{"type":"mine","id":"1516600","name":"#1"},"validFrom":"1993-04-21","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516600|P22308|1993-04-21|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C14824","name":"Chester Adams"},"object":{"type":"mine","id":"1516600","name":"#1"},"validFrom":"1993-04-21","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516600|C14824|1993-04-21|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C14824","name":"Chester Adams"},"object":{"type":"operator","id":"P22308","name":"Duke Coal Inc"},"validFrom":"1993-04-21","validTo":null,"current":true,"derived":true,"evidenceMineId":"1516600","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1516600|P22308|1993-04-21|C14824|1993-04-21|93963"}}],"coverage":{"historyRecords":6,"edgeCount":18,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1516600","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"}}