{"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":"2026-10-17T05:35:58.500035+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":"1512478","name":"Terco No 3"},"operator":{"type":"operator","id":"P16324","name":"Terco Inc"},"controller":{"type":"controller","id":"C09710","name":"Terry  McCreary"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C08167","name":"Nelson R Joy Et Al"},"object":{"type":"mine","id":"1512478","name":"Terco No 3"},"validFrom":"1980-07-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1512478|C08167|1980-07-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P10776","name":"Minerals Development Company"},"object":{"type":"mine","id":"1512478","name":"Terco No 3"},"validFrom":"1980-08-01","validTo":"1982-03-02","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1512478|P10776|1980-08-01|1982-03-02"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C08167","name":"Nelson R Joy Et Al"},"object":{"type":"operator","id":"P10776","name":"Minerals Development Company"},"validFrom":"1980-08-01","validTo":"1982-03-02","current":false,"derived":true,"evidenceMineId":"1512478","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1512478|P10776|1980-08-01|C08167|1980-07-01|76631"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P13233","name":"Little Poplar Creek Heavy Equipment Coal Company"},"object":{"type":"mine","id":"1512478","name":"Terco No 3"},"validFrom":"1982-03-03","validTo":"1983-01-24","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1512478|P13233|1982-03-03|1983-01-24"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C09710","name":"Terry  McCreary et al"},"object":{"type":"mine","id":"1512478","name":"Terco No 3"},"validFrom":"1982-03-03","validTo":"1983-01-24","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1512478|C09710|1982-03-03|1983-01-24"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C09710","name":"Terry  McCreary et al"},"object":{"type":"operator","id":"P13233","name":"Little Poplar Creek Heavy Equipment Coal Company"},"validFrom":"1982-03-03","validTo":"1983-01-24","current":false,"derived":true,"evidenceMineId":"1512478","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1512478|P13233|1982-03-03|C09710|1982-03-03|80363"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P14102","name":"No 7 Coal Company"},"object":{"type":"mine","id":"1512478","name":"Terco No 3"},"validFrom":"1983-01-25","validTo":"1984-11-01","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1512478|P14102|1983-01-25|1984-11-01"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C10276","name":"Gist Charlie-Bert Davis Et Al"},"object":{"type":"mine","id":"1512478","name":"Terco No 3"},"validFrom":"1983-01-25","validTo":"1984-11-01","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1512478|C10276|1983-01-25|1984-11-01"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C10276","name":"Gist Charlie-Bert Davis Et Al"},"object":{"type":"operator","id":"P14102","name":"No 7 Coal Company"},"validFrom":"1983-01-25","validTo":"1984-11-01","current":false,"derived":true,"evidenceMineId":"1512478","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1512478|P14102|1983-01-25|C10276|1983-01-25|81633"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C04722","name":"Randal  Lawson"},"object":{"type":"mine","id":"1512478","name":"Terco No 3"},"validFrom":"1983-06-27","validTo":"1985-02-20","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1512478|C04722|1983-06-27|1985-02-20"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P15873","name":"Terco Inc"},"object":{"type":"mine","id":"1512478","name":"Terco No 3"},"validFrom":"1984-11-02","validTo":"1985-01-08","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1512478|P15873|1984-11-02|1985-01-08"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C04722","name":"Randal  Lawson"},"object":{"type":"operator","id":"P15873","name":"Terco Inc"},"validFrom":"1984-11-02","validTo":"1985-01-08","current":false,"derived":true,"evidenceMineId":"1512478","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1512478|P15873|1984-11-02|C04722|1983-06-27|66571"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P16324","name":"Terco Inc"},"object":{"type":"mine","id":"1512478","name":"Terco No 3"},"validFrom":"1985-01-09","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1512478|P16324|1985-01-09|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C09710","name":"Terry  McCreary et al"},"object":{"type":"mine","id":"1512478","name":"Terco No 3"},"validFrom":"1985-01-09","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1512478|C09710|1985-01-09|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C09710","name":"Terry  McCreary et al"},"object":{"type":"operator","id":"P16324","name":"Terco Inc"},"validFrom":"1985-01-09","validTo":null,"current":true,"derived":true,"evidenceMineId":"1512478","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1512478|P16324|1985-01-09|C09710|1985-01-09|80366"}}],"coverage":{"historyRecords":5,"edgeCount":15,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1512478","dataSource":"postgres","snapshotId":"2026-10-17T05:35:58.500035+00:00","completedAt":"2026-10-17T06:17:15.228Z","sourceCount":20,"totalRows":15450873,"relationshipSemantics":"valid time; null validTo means current or open-ended in the source"}}