{"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":"4605045","name":"Mine No 1"},"operator":{"type":"operator","id":"P16358","name":"San-West Coal Company Inc"},"controller":{"type":"controller","id":"C03440","name":"Edward A  Asbury"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C04432","name":"Turley J C Jr"},"object":{"type":"mine","id":"4605045","name":"Mine No 1"},"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":"4605045|C04432|1950-01-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C01520","name":"Sparks Coal Company Inc"},"object":{"type":"mine","id":"4605045","name":"Mine No 1"},"validFrom":"1975-03-04","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4605045|C01520|1975-03-04|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P01797","name":"Sparks Coal Company Inc"},"object":{"type":"mine","id":"4605045","name":"Mine No 1"},"validFrom":"1976-02-16","validTo":"1978-01-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4605045|P01797|1976-02-16|1978-01-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C01520","name":"Sparks Coal Company Inc"},"object":{"type":"operator","id":"P01797","name":"Sparks Coal Company Inc"},"validFrom":"1976-02-16","validTo":"1978-01-31","current":false,"derived":true,"evidenceMineId":"4605045","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4605045|P01797|1976-02-16|C01520|1975-03-04|54422"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P05351","name":"Welch Mining Company"},"object":{"type":"mine","id":"4605045","name":"Mine No 1"},"validFrom":"1978-02-01","validTo":"1984-12-03","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4605045|P05351|1978-02-01|1984-12-03"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C04432","name":"Turley J C Jr"},"object":{"type":"operator","id":"P05351","name":"Welch Mining Company"},"validFrom":"1978-02-01","validTo":"1984-12-03","current":false,"derived":true,"evidenceMineId":"4605045","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4605045|P05351|1978-02-01|C04432|1950-01-01|65995"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P16358","name":"San-West Coal Company Inc"},"object":{"type":"mine","id":"4605045","name":"Mine No 1"},"validFrom":"1984-12-04","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4605045|P16358|1984-12-04|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C03440","name":"Edward A  Asbury"},"object":{"type":"mine","id":"4605045","name":"Mine No 1"},"validFrom":"1984-12-04","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4605045|C03440|1984-12-04|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C03440","name":"Edward A  Asbury"},"object":{"type":"operator","id":"P16358","name":"San-West Coal Company Inc"},"validFrom":"1984-12-04","validTo":null,"current":true,"derived":true,"evidenceMineId":"4605045","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4605045|P16358|1984-12-04|C03440|1984-12-04|62868"}}],"coverage":{"historyRecords":3,"edgeCount":9,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4605045","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"}}