{"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":"0301250","name":"Cherokee Sand & Gravel LLC"},"operator":{"type":"operator","id":"0051141","name":"Cherokee Sand & Gravel LLC"},"controller":{"type":"controller","id":"0041529","name":"John W  De Haven"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-18T09:31:49.615908+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L12566","name":"Viking Ready Mix Concrete"},"object":{"type":"mine","id":"0301250","name":"Cherokee Sand & Gravel LLC"},"validFrom":"1977-10-01","validTo":"1992-01-12","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"0301250|L12566|1977-10-01|1992-01-12"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M09629","name":"Connally John"},"object":{"type":"mine","id":"0301250","name":"Cherokee Sand & Gravel LLC"},"validFrom":"1977-10-01","validTo":"1992-01-12","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"0301250|M09629|1977-10-01|1992-01-12"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M09629","name":"Connally John"},"object":{"type":"operator","id":"L12566","name":"Viking Ready Mix Concrete"},"validFrom":"1977-10-01","validTo":"1992-01-12","current":false,"derived":true,"evidenceMineId":"0301250","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"0301250|L12566|1977-10-01|M09629|1977-10-01|146881"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L12567","name":"B & B Sand & Gravel Inc"},"object":{"type":"mine","id":"0301250","name":"Cherokee Sand & Gravel LLC"},"validFrom":"1992-01-13","validTo":"2002-04-23","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"0301250|L12567|1992-01-13|2002-04-23"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M09630","name":"Rodney  Blevins"},"object":{"type":"mine","id":"0301250","name":"Cherokee Sand & Gravel LLC"},"validFrom":"1992-01-13","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"0301250|M09630|1992-01-13|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M09630","name":"Rodney  Blevins"},"object":{"type":"operator","id":"L12567","name":"B & B Sand & Gravel Inc"},"validFrom":"1992-01-13","validTo":"2002-04-23","current":false,"derived":true,"evidenceMineId":"0301250","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"0301250|L12567|1992-01-13|M09630|1992-01-13|146882"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0050940","name":"Bradford  Sand & Gravel"},"object":{"type":"mine","id":"0301250","name":"Cherokee Sand & Gravel LLC"},"validFrom":"2002-04-24","validTo":"2002-10-29","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"0301250|0050940|2002-04-24|2002-10-29"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0041283","name":"JOE  TURNER"},"object":{"type":"mine","id":"0301250","name":"Cherokee Sand & Gravel LLC"},"validFrom":"2002-04-24","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"0301250|0041283|2002-04-24|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0041283","name":"JOE  TURNER"},"object":{"type":"operator","id":"0050940","name":"Bradford  Sand & Gravel"},"validFrom":"2002-04-24","validTo":"2002-10-29","current":false,"derived":true,"evidenceMineId":"0301250","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"0301250|0050940|2002-04-24|0041283|2002-04-24|2418"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0051141","name":"Cherokee Sand & Gravel LLC"},"object":{"type":"mine","id":"0301250","name":"Cherokee Sand & Gravel LLC"},"validFrom":"2002-10-30","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"0301250|0051141|2002-10-30|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0041529","name":"John W  De Haven"},"object":{"type":"mine","id":"0301250","name":"Cherokee Sand & Gravel LLC"},"validFrom":"2002-10-30","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"0301250|0041529|2002-10-30|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0041529","name":"John W  De Haven"},"object":{"type":"operator","id":"0051141","name":"Cherokee Sand & Gravel LLC"},"validFrom":"2002-10-30","validTo":null,"current":true,"derived":true,"evidenceMineId":"0301250","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"0301250|0051141|2002-10-30|0041529|2002-10-30|2715"}}],"coverage":{"historyRecords":4,"edgeCount":12,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"0301250","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"}}