{"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":"4607221","name":"Hamrick Run Coal Co #2"},"operator":{"type":"operator","id":"P18252","name":"Hamrick Run Coal Company"},"controller":{"type":"controller","id":"C12737","name":"Hewitt Clair"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C11510","name":"Sigler Walter W Et Al"},"object":{"type":"mine","id":"4607221","name":"Hamrick Run Coal Co #2"},"validFrom":"1982-06-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4607221|C11510|1982-06-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P18252","name":"Hamrick Run Coal Company"},"object":{"type":"mine","id":"4607221","name":"Hamrick Run Coal Co #2"},"validFrom":"1986-10-01","validTo":"1988-02-16","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4607221|P18252|1986-10-01|1988-02-16"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C12737","name":"Hewitt Clair"},"object":{"type":"mine","id":"4607221","name":"Hamrick Run Coal Co #2"},"validFrom":"1986-10-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4607221|C12737|1986-10-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C12737","name":"Hewitt Clair"},"object":{"type":"operator","id":"P18252","name":"Hamrick Run Coal Company"},"validFrom":"1986-10-01","validTo":"1988-02-16","current":false,"derived":true,"evidenceMineId":"4607221","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4607221|P18252|1986-10-01|C12737|1986-10-01|87743"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P19381","name":"L & O Coal Company Inc"},"object":{"type":"mine","id":"4607221","name":"Hamrick Run Coal Co #2"},"validFrom":"1988-02-17","validTo":"1988-05-03","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4607221|P19381|1988-02-17|1988-05-03"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C11749","name":"Short Denver Jr"},"object":{"type":"mine","id":"4607221","name":"Hamrick Run Coal Co #2"},"validFrom":"1988-02-17","validTo":"1988-05-03","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4607221|C11749|1988-02-17|1988-05-03"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C11749","name":"Short Denver Jr"},"object":{"type":"operator","id":"P19381","name":"L & O Coal Company Inc"},"validFrom":"1988-02-17","validTo":"1988-05-03","current":false,"derived":true,"evidenceMineId":"4607221","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4607221|P19381|1988-02-17|C11749|1988-02-17|85358"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P15301","name":"Jodie Mining Inc"},"object":{"type":"mine","id":"4607221","name":"Hamrick Run Coal Co #2"},"validFrom":"1988-05-04","validTo":"1988-06-05","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4607221|P15301|1988-05-04|1988-06-05"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C11510","name":"Sigler Walter W Et Al"},"object":{"type":"operator","id":"P15301","name":"Jodie Mining Inc"},"validFrom":"1988-05-04","validTo":"1988-06-05","current":false,"derived":true,"evidenceMineId":"4607221","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4607221|P15301|1988-05-04|C11510|1982-06-01|84751"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P19547","name":"Hamrick Run Coal Company Inc"},"object":{"type":"mine","id":"4607221","name":"Hamrick Run Coal Co #2"},"validFrom":"1988-06-06","validTo":"1989-10-29","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4607221|P19547|1988-06-06|1989-10-29"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C13410","name":"Sears Casey & Emery Smallman"},"object":{"type":"mine","id":"4607221","name":"Hamrick Run Coal Co #2"},"validFrom":"1988-06-06","validTo":"1989-10-29","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4607221|C13410|1988-06-06|1989-10-29"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C13410","name":"Sears Casey & Emery Smallman"},"object":{"type":"operator","id":"P19547","name":"Hamrick Run Coal Company Inc"},"validFrom":"1988-06-06","validTo":"1989-10-29","current":false,"derived":true,"evidenceMineId":"4607221","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4607221|P19547|1988-06-06|C13410|1988-06-06|89824"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P18252","name":"Hamrick Run Coal Company"},"object":{"type":"mine","id":"4607221","name":"Hamrick Run Coal Co #2"},"validFrom":"1989-10-30","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4607221|P18252|1989-10-30|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C12737","name":"Hewitt Clair"},"object":{"type":"operator","id":"P18252","name":"Hamrick Run Coal Company"},"validFrom":"1989-10-30","validTo":null,"current":true,"derived":true,"evidenceMineId":"4607221","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4607221|P18252|1989-10-30|C12737|1986-10-01|87744"}}],"coverage":{"historyRecords":5,"edgeCount":14,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4607221","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"}}