{"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":"2026-10-18T09:31:49.615908+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":"1101150","name":"Sand Valley Sand & Gravel Inc"},"operator":{"type":"operator","id":"L06603","name":"Sand Valley Sand & Gravel Inc"},"controller":{"type":"controller","id":"M10077","name":"Joseph A  Scharf"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-18T09:31:49.615908+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L06602","name":"Lewis & Company"},"object":{"type":"mine","id":"1101150","name":"Sand Valley Sand & Gravel Inc"},"validFrom":"1950-01-01","validTo":"1983-07-04","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"1101150|L06602|1950-01-01|1983-07-04"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M05259","name":"James R  Lewis"},"object":{"type":"mine","id":"1101150","name":"Sand Valley Sand & Gravel Inc"},"validFrom":"1950-01-01","validTo":"1983-07-04","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"1101150|M05259|1950-01-01|1983-07-04"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M05259","name":"James R  Lewis"},"object":{"type":"operator","id":"L06602","name":"Lewis & Company"},"validFrom":"1950-01-01","validTo":"1983-07-04","current":false,"derived":true,"evidenceMineId":"1101150","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"1101150|L06602|1950-01-01|M05259|1950-01-01|134073"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L06603","name":"Sand Valley Sand & Gravel Inc"},"object":{"type":"mine","id":"1101150","name":"Sand Valley Sand & Gravel Inc"},"validFrom":"1983-07-05","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"1101150|L06603|1983-07-05|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M05260","name":"Melvin  Price"},"object":{"type":"mine","id":"1101150","name":"Sand Valley Sand & Gravel Inc"},"validFrom":"1983-07-05","validTo":"2024-07-20","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"1101150|M05260|1983-07-05|2024-07-20"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M05260","name":"Melvin  Price"},"object":{"type":"operator","id":"L06603","name":"Sand Valley Sand & Gravel Inc"},"validFrom":"1983-07-05","validTo":"2024-07-20","current":false,"derived":true,"evidenceMineId":"1101150","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"1101150|L06603|1983-07-05|M05260|1983-07-05|134074"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M10077","name":"Joseph A  Scharf et al"},"object":{"type":"mine","id":"1101150","name":"Sand Valley Sand & Gravel Inc"},"validFrom":"2024-07-21","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"1101150|M10077|2024-07-21|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M10077","name":"Joseph A  Scharf et al"},"object":{"type":"operator","id":"L06603","name":"Sand Valley Sand & Gravel Inc"},"validFrom":"2024-07-21","validTo":null,"current":true,"derived":true,"evidenceMineId":"1101150","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"1101150|L06603|1983-07-05|M10077|2024-07-21|148376"}}],"coverage":{"historyRecords":3,"edgeCount":8,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1101150","dataSource":"postgres","snapshotId":"2026-10-18T09:31:49.615908+00:00","completedAt":"2026-10-18T09:31:49.615Z","sourceCount":20,"totalRows":17915666,"relationshipSemantics":"valid time; null validTo means current or open-ended in the source"}}