{"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":"1102983","name":"Fayette County Sand & Gravel Ltd."},"operator":{"type":"operator","id":"0150513","name":"Fayette County Sand & Gravel Ltd"},"controller":{"type":"controller","id":"0132681","name":"Brian R  Buehne"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L15593","name":"Central Illinois Materials Inc"},"object":{"type":"mine","id":"1102983","name":"Fayette County Sand & Gravel Ltd."},"validFrom":"1996-05-01","validTo":"2017-03-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1102983|L15593|1996-05-01|2017-03-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M36743","name":"Charles  Barenfanger"},"object":{"type":"mine","id":"1102983","name":"Fayette County Sand & Gravel Ltd."},"validFrom":"1996-05-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1102983|M36743|1996-05-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M36743","name":"Charles  Barenfanger"},"object":{"type":"operator","id":"L15593","name":"Central Illinois Materials Inc"},"validFrom":"1996-05-01","validTo":"2017-03-31","current":false,"derived":true,"evidenceMineId":"1102983","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1102983|L15593|1996-05-01|M36743|1996-05-01|165933"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0150513","name":"Fayette County Sand & Gravel Ltd"},"object":{"type":"mine","id":"1102983","name":"Fayette County Sand & Gravel Ltd."},"validFrom":"2017-04-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1102983|0150513|2017-04-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0132681","name":"Brian R  Buehne"},"object":{"type":"mine","id":"1102983","name":"Fayette County Sand & Gravel Ltd."},"validFrom":"2017-04-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1102983|0132681|2017-04-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0132681","name":"Brian R  Buehne"},"object":{"type":"operator","id":"0150513","name":"Fayette County Sand & Gravel Ltd"},"validFrom":"2017-04-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"1102983","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1102983|0150513|2017-04-01|0132681|2017-04-01|26616"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1102983","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"}}