{"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":"4400009","name":"Belmont Quarry"},"operator":{"type":"operator","id":"L06514","name":"Rogers Group Inc."},"controller":{"type":"controller","id":"M00452","name":"Rogers Group Inc"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00452","name":"Rogers Group Inc"},"object":{"type":"mine","id":"4400009","name":"Belmont Quarry"},"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":"4400009|M00452|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L04178","name":"Belmont Traprock Company Inc"},"object":{"type":"mine","id":"4400009","name":"Belmont Quarry"},"validFrom":"1950-01-01","validTo":"1980-01-14","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4400009|L04178|1950-01-01|1980-01-14"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M03358","name":"Conrad T  Lawrence"},"object":{"type":"mine","id":"4400009","name":"Belmont Quarry"},"validFrom":"1950-01-01","validTo":"1980-01-14","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4400009|M03358|1950-01-01|1980-01-14"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M03358","name":"Conrad T  Lawrence"},"object":{"type":"operator","id":"L04178","name":"Belmont Traprock Company Inc"},"validFrom":"1950-01-01","validTo":"1980-01-14","current":false,"derived":true,"evidenceMineId":"4400009","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4400009|L04178|1950-01-01|M03358|1950-01-01|128847"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L04179","name":"Belmont Traprock Company Inc"},"object":{"type":"mine","id":"4400009","name":"Belmont Quarry"},"validFrom":"1980-01-15","validTo":"1988-06-01","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4400009|L04179|1980-01-15|1988-06-01"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M03359","name":"George P  Martin"},"object":{"type":"mine","id":"4400009","name":"Belmont Quarry"},"validFrom":"1980-01-15","validTo":"1988-06-01","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4400009|M03359|1980-01-15|1988-06-01"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M03359","name":"George P  Martin"},"object":{"type":"operator","id":"L04179","name":"Belmont Traprock Company Inc"},"validFrom":"1980-01-15","validTo":"1988-06-01","current":false,"derived":true,"evidenceMineId":"4400009","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4400009|L04179|1980-01-15|M03359|1980-01-15|128848"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L10551","name":"Appomattox Lime Company"},"object":{"type":"mine","id":"4400009","name":"Belmont Quarry"},"validFrom":"1988-06-02","validTo":"2002-11-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4400009|L10551|1988-06-02|2002-11-30"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M01823","name":"David D  Willis"},"object":{"type":"mine","id":"4400009","name":"Belmont Quarry"},"validFrom":"1988-06-02","validTo":"2016-05-17","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4400009|M01823|1988-06-02|2016-05-17"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M01823","name":"David D  Willis"},"object":{"type":"operator","id":"L10551","name":"Appomattox Lime Company"},"validFrom":"1988-06-02","validTo":"2002-11-30","current":false,"derived":true,"evidenceMineId":"4400009","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4400009|L10551|1988-06-02|M01823|1988-06-02|121479"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L10551","name":"Appomattox Lime Company"},"object":{"type":"mine","id":"4400009","name":"Belmont Quarry"},"validFrom":"2002-12-01","validTo":"2026-08-11","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4400009|L10551|2002-12-01|2026-08-11"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M01823","name":"David D  Willis"},"object":{"type":"operator","id":"L10551","name":"Appomattox Lime Company"},"validFrom":"2002-12-01","validTo":"2016-05-17","current":false,"derived":true,"evidenceMineId":"4400009","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4400009|L10551|2002-12-01|M01823|1988-06-02|121480"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0126721","name":"Willis Trust et al"},"object":{"type":"mine","id":"4400009","name":"Belmont Quarry"},"validFrom":"2016-05-18","validTo":"2017-08-08","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4400009|0126721|2016-05-18|2017-08-08"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0126721","name":"Willis Trust et al"},"object":{"type":"operator","id":"L10551","name":"Appomattox Lime Company"},"validFrom":"2016-05-18","validTo":"2002-11-30","current":false,"derived":true,"evidenceMineId":"4400009","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4400009|L10551|1988-06-02|0126721|2016-05-18|24539"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0126721","name":"Willis Trust et al"},"object":{"type":"operator","id":"L10551","name":"Appomattox Lime Company"},"validFrom":"2016-05-18","validTo":"2017-08-08","current":false,"derived":true,"evidenceMineId":"4400009","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4400009|L10551|2002-12-01|0126721|2016-05-18|24540"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0137041","name":"Rockydale Quarries Corporation"},"object":{"type":"mine","id":"4400009","name":"Belmont Quarry"},"validFrom":"2017-08-09","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4400009|0137041|2017-08-09|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0137041","name":"Rockydale Quarries Corporation"},"object":{"type":"operator","id":"L10551","name":"Appomattox Lime Company"},"validFrom":"2017-08-09","validTo":"2002-11-30","current":false,"derived":true,"evidenceMineId":"4400009","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4400009|L10551|1988-06-02|0137041|2017-08-09|27607"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0137041","name":"Rockydale Quarries Corporation"},"object":{"type":"operator","id":"L10551","name":"Appomattox Lime Company"},"validFrom":"2017-08-09","validTo":"2026-08-11","current":false,"derived":true,"evidenceMineId":"4400009","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4400009|L10551|2002-12-01|0137041|2017-08-09|27608"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L06514","name":"Rogers Group Inc."},"object":{"type":"mine","id":"4400009","name":"Belmont Quarry"},"validFrom":"2026-08-12","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4400009|L06514|2026-08-12|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00452","name":"Rogers Group Inc"},"object":{"type":"operator","id":"L06514","name":"Rogers Group Inc."},"validFrom":"2026-08-12","validTo":null,"current":true,"derived":true,"evidenceMineId":"4400009","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4400009|L06514|2026-08-12|M00452|1950-01-01|111205"}}],"coverage":{"historyRecords":9,"edgeCount":20,"intervalAnomalies":2,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4400009","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"}}