{"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":"4800024","name":"State Rock Pit"},"operator":{"type":"operator","id":"L05918","name":"Sterling Sand & Gravel Company Of Wyoming"},"controller":{"type":"controller","id":"M00002","name":"Koppers Company Inc"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00242","name":"Sterling W A"},"object":{"type":"mine","id":"4800024","name":"State Rock Pit"},"validFrom":"1950-01-01","validTo":"1981-11-14","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4800024|M00242|1950-01-01|1981-11-14"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L01342","name":"Yeoman Construction Company Inc"},"object":{"type":"mine","id":"4800024","name":"State Rock Pit"},"validFrom":"1950-01-01","validTo":"1979-02-26","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4800024|L01342|1950-01-01|1979-02-26"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M01188","name":"Yeoman Robert L"},"object":{"type":"mine","id":"4800024","name":"State Rock Pit"},"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":"4800024|M01188|1950-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M01188","name":"Yeoman Robert L"},"object":{"type":"operator","id":"L01342","name":"Yeoman Construction Company Inc"},"validFrom":"1950-01-01","validTo":"1979-02-26","current":false,"derived":true,"evidenceMineId":"4800024","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4800024|L01342|1950-01-01|M01188|1950-01-01|117309"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L02355","name":"Sterling Sand & Gravel Company Of Wyoming"},"object":{"type":"mine","id":"4800024","name":"State Rock Pit"},"validFrom":"1979-02-27","validTo":"1981-11-14","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4800024|L02355|1979-02-27|1981-11-14"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00242","name":"Sterling W A"},"object":{"type":"operator","id":"L02355","name":"Sterling Sand & Gravel Company Of Wyoming"},"validFrom":"1979-02-27","validTo":"1981-11-14","current":false,"derived":true,"evidenceMineId":"4800024","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4800024|L02355|1979-02-27|M00242|1950-01-01|108067"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L05918","name":"Sterling Sand & Gravel Company Of Wyoming"},"object":{"type":"mine","id":"4800024","name":"State Rock Pit"},"validFrom":"1981-11-15","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4800024|L05918|1981-11-15|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00002","name":"Koppers Company Inc"},"object":{"type":"mine","id":"4800024","name":"State Rock Pit"},"validFrom":"1981-11-15","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4800024|M00002|1981-11-15|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00002","name":"Koppers Company Inc"},"object":{"type":"operator","id":"L05918","name":"Sterling Sand & Gravel Company Of Wyoming"},"validFrom":"1981-11-15","validTo":null,"current":true,"derived":true,"evidenceMineId":"4800024","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4800024|L05918|1981-11-15|M00002|1981-11-15|100388"}}],"coverage":{"historyRecords":3,"edgeCount":9,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4800024","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"}}