{"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":"0404280","name":"Randall Sand & Gravel"},"operator":{"type":"operator","id":"0076943","name":"Randall Sand & Gravel"},"controller":{"type":"controller","id":"0064629","name":"Cathy R  Studebaker"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L12322","name":"Randall'S Sand & Gravel"},"object":{"type":"mine","id":"0404280","name":"Randall Sand & Gravel"},"validFrom":"1978-12-01","validTo":"1991-07-29","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0404280|L12322|1978-12-01|1991-07-29"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M09462","name":"Stan  Randall"},"object":{"type":"mine","id":"0404280","name":"Randall Sand & Gravel"},"validFrom":"1978-12-01","validTo":"1991-07-29","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0404280|M09462|1978-12-01|1991-07-29"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M09462","name":"Stan  Randall"},"object":{"type":"operator","id":"L12322","name":"Randall'S Sand & Gravel"},"validFrom":"1978-12-01","validTo":"1991-07-29","current":false,"derived":true,"evidenceMineId":"0404280","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0404280|L12322|1978-12-01|M09462|1978-12-01|146465"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L12323","name":"Randall Sand & Gravel"},"object":{"type":"mine","id":"0404280","name":"Randall Sand & Gravel"},"validFrom":"1991-07-30","validTo":"2006-11-02","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0404280|L12323|1991-07-30|2006-11-02"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M09463","name":"Charles  Studebaker"},"object":{"type":"mine","id":"0404280","name":"Randall Sand & Gravel"},"validFrom":"1991-07-30","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0404280|M09463|1991-07-30|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M09463","name":"Charles  Studebaker"},"object":{"type":"operator","id":"L12323","name":"Randall Sand & Gravel"},"validFrom":"1991-07-30","validTo":"2006-11-02","current":false,"derived":true,"evidenceMineId":"0404280","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0404280|L12323|1991-07-30|M09463|1991-07-30|146466"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0076943","name":"Randall Sand & Gravel"},"object":{"type":"mine","id":"0404280","name":"Randall Sand & Gravel"},"validFrom":"2006-11-03","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0404280|0076943|2006-11-03|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0064629","name":"Cathy R  Studebaker"},"object":{"type":"mine","id":"0404280","name":"Randall Sand & Gravel"},"validFrom":"2006-11-03","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0404280|0064629|2006-11-03|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0064629","name":"Cathy R  Studebaker"},"object":{"type":"operator","id":"0076943","name":"Randall Sand & Gravel"},"validFrom":"2006-11-03","validTo":null,"current":true,"derived":true,"evidenceMineId":"0404280","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0404280|0076943|2006-11-03|0064629|2006-11-03|8866"}}],"coverage":{"historyRecords":3,"edgeCount":9,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"0404280","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"}}