{"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":"0102760","name":"Merritt Rogers Mine"},"operator":{"type":"operator","id":"P21363","name":"M S & R Equipment Company Inc"},"controller":{"type":"controller","id":"0149901","name":"Michael T  Costello"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C02496","name":"Costain Group PLC"},"object":{"type":"mine","id":"0102760","name":"Merritt Rogers Mine"},"validFrom":"1950-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0102760|C02496|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P21731","name":"Costain Coal Inc"},"object":{"type":"mine","id":"0102760","name":"Merritt Rogers Mine"},"validFrom":"1988-02-01","validTo":"1996-01-01","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0102760|P21731|1988-02-01|1996-01-01"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C02496","name":"Costain Group PLC"},"object":{"type":"operator","id":"P21731","name":"Costain Coal Inc"},"validFrom":"1988-02-01","validTo":"1996-01-01","current":false,"derived":true,"evidenceMineId":"0102760","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0102760|P21731|1988-02-01|C02496|1950-01-01|58676"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0101359","name":"Kendall  Robison et al"},"object":{"type":"mine","id":"0102760","name":"Merritt Rogers Mine"},"validFrom":"1991-03-01","validTo":"2017-08-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0102760|0101359|1991-03-01|2017-08-31"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P23363","name":"Alabama Land & Mineral Corp"},"object":{"type":"mine","id":"0102760","name":"Merritt Rogers Mine"},"validFrom":"1996-01-02","validTo":"1999-01-11","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0102760|P23363|1996-01-02|1999-01-11"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C10977","name":"Timothy L  McCoy"},"object":{"type":"mine","id":"0102760","name":"Merritt Rogers Mine"},"validFrom":"1996-01-02","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0102760|C10977|1996-01-02|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C10977","name":"Timothy L  McCoy"},"object":{"type":"operator","id":"P23363","name":"Alabama Land & Mineral Corp"},"validFrom":"1996-01-02","validTo":"1999-01-11","current":false,"derived":true,"evidenceMineId":"0102760","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0102760|P23363|1996-01-02|C10977|1996-01-02|83270"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P24244","name":"Hallmark Land Llc"},"object":{"type":"mine","id":"0102760","name":"Merritt Rogers Mine"},"validFrom":"1999-01-12","validTo":"2000-11-02","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0102760|P24244|1999-01-12|2000-11-02"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C15848","name":"Hallmark Mary"},"object":{"type":"mine","id":"0102760","name":"Merritt Rogers Mine"},"validFrom":"1999-01-12","validTo":"2000-11-02","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0102760|C15848|1999-01-12|2000-11-02"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C15848","name":"Hallmark Mary"},"object":{"type":"operator","id":"P24244","name":"Hallmark Land Llc"},"validFrom":"1999-01-12","validTo":"2000-11-02","current":false,"derived":true,"evidenceMineId":"0102760","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0102760|P24244|1999-01-12|C15848|1999-01-12|97105"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P21363","name":"M S & R Equipment Company Inc"},"object":{"type":"mine","id":"0102760","name":"Merritt Rogers Mine"},"validFrom":"2000-11-03","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0102760|P21363|2000-11-03|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0101359","name":"Kendall  Robison et al"},"object":{"type":"operator","id":"P21363","name":"M S & R Equipment Company Inc"},"validFrom":"2000-11-03","validTo":"2017-08-31","current":false,"derived":true,"evidenceMineId":"0102760","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0102760|P21363|2000-11-03|0101359|1991-03-01|17128"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0101359","name":"Otis R  Robison et al"},"object":{"type":"operator","id":"P21363","name":"M S & R Equipment Company Inc"},"validFrom":"2000-11-03","validTo":"2017-08-31","current":false,"derived":true,"evidenceMineId":"0102760","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0102760|P21363|2000-11-03|0101359|1991-03-01|17129"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0136041","name":"Freddy  Hunt et al"},"object":{"type":"mine","id":"0102760","name":"Merritt Rogers Mine"},"validFrom":"2017-09-01","validTo":"2019-07-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0102760|0136041|2017-09-01|2019-07-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0136041","name":"Freddy  Hunt et al"},"object":{"type":"operator","id":"P21363","name":"M S & R Equipment Company Inc"},"validFrom":"2017-09-01","validTo":"2019-07-31","current":false,"derived":true,"evidenceMineId":"0102760","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0102760|P21363|2000-11-03|0136041|2017-09-01|27357"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0136041","name":"Michael T  Costello et al"},"object":{"type":"operator","id":"P21363","name":"M S & R Equipment Company Inc"},"validFrom":"2017-09-01","validTo":"2019-07-31","current":false,"derived":true,"evidenceMineId":"0102760","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0102760|P21363|2000-11-03|0136041|2017-09-01|27358"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0149901","name":"Michael T  Costello"},"object":{"type":"mine","id":"0102760","name":"Merritt Rogers Mine"},"validFrom":"2019-08-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0102760|0149901|2019-08-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0149901","name":"Michael T  Costello"},"object":{"type":"operator","id":"P21363","name":"M S & R Equipment Company Inc"},"validFrom":"2019-08-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"0102760","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0102760|P21363|2000-11-03|0149901|2019-08-01|30884"}}],"coverage":{"historyRecords":8,"edgeCount":18,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"0102760","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"}}