{"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":"1001352","name":"Greyhound Mine"},"operator":{"type":"operator","id":"L08838","name":"Yanke Machine Shop Inc"},"controller":{"type":"controller","id":"M03539","name":"Industrial Construction Inc"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M04254","name":"Osburn Russell"},"object":{"type":"mine","id":"1001352","name":"Greyhound Mine"},"validFrom":"1950-01-01","validTo":"1986-06-29","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1001352|M04254|1950-01-01|1986-06-29"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L04395","name":"Greyhound Mining & Milling Inc"},"object":{"type":"mine","id":"1001352","name":"Greyhound Mine"},"validFrom":"1978-03-09","validTo":"1981-05-21","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1001352|L04395|1978-03-09|1981-05-21"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M03539","name":"Industrial Construction Inc"},"object":{"type":"mine","id":"1001352","name":"Greyhound Mine"},"validFrom":"1978-03-09","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1001352|M03539|1978-03-09|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M03539","name":"Industrial Construction Inc"},"object":{"type":"operator","id":"L04395","name":"Greyhound Mining & Milling Inc"},"validFrom":"1978-03-09","validTo":"1981-05-21","current":false,"derived":true,"evidenceMineId":"1001352","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1001352|L04395|1978-03-09|M03539|1978-03-09|129299"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L05273","name":"Idaho Rand Inc"},"object":{"type":"mine","id":"1001352","name":"Greyhound Mine"},"validFrom":"1981-05-22","validTo":"1986-06-29","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1001352|L05273|1981-05-22|1986-06-29"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M04254","name":"Osburn Russell"},"object":{"type":"operator","id":"L05273","name":"Idaho Rand Inc"},"validFrom":"1981-05-22","validTo":"1986-06-29","current":false,"derived":true,"evidenceMineId":"1001352","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1001352|L05273|1981-05-22|M04254|1950-01-01|131529"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L08838","name":"Yanke Machine Shop Inc"},"object":{"type":"mine","id":"1001352","name":"Greyhound Mine"},"validFrom":"1986-06-30","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1001352|L08838|1986-06-30|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M03539","name":"Industrial Construction Inc"},"object":{"type":"mine","id":"1001352","name":"Greyhound Mine"},"validFrom":"1986-06-30","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1001352|M03539|1986-06-30|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M03539","name":"Industrial Construction Inc"},"object":{"type":"operator","id":"L08838","name":"Yanke Machine Shop Inc"},"validFrom":"1986-06-30","validTo":null,"current":true,"derived":true,"evidenceMineId":"1001352","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1001352|L08838|1986-06-30|M03539|1986-06-30|129302"}}],"coverage":{"historyRecords":3,"edgeCount":9,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1001352","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"}}