{"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":"4003013","name":"Hardin County Sand & Gravel Inc."},"operator":{"type":"operator","id":"0158753","name":"HARDIN COUNTY SAND & GRAVEL INC"},"controller":{"type":"controller","id":"0142881","name":"Justin  Lane"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-18T09:31:49.615908+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L34875","name":"Gibbs Construction"},"object":{"type":"mine","id":"4003013","name":"Hardin County Sand & Gravel Inc."},"validFrom":"1989-05-01","validTo":"2013-03-17","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"4003013|L34875|1989-05-01|2013-03-17"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M34875","name":"Danny  Gibbs"},"object":{"type":"mine","id":"4003013","name":"Hardin County Sand & Gravel Inc."},"validFrom":"1989-05-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"4003013|M34875|1989-05-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M34875","name":"Danny  Gibbs"},"object":{"type":"operator","id":"L34875","name":"Gibbs Construction"},"validFrom":"1989-05-01","validTo":"2013-03-17","current":false,"derived":true,"evidenceMineId":"4003013","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"4003013|L34875|1989-05-01|M34875|1989-05-01|163749"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0127393","name":"Childer's Hill Gravel, LLC"},"object":{"type":"mine","id":"4003013","name":"Hardin County Sand & Gravel Inc."},"validFrom":"2013-03-18","validTo":"2015-07-05","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"4003013|0127393|2013-03-18|2015-07-05"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0108361","name":"Danny  Elam"},"object":{"type":"mine","id":"4003013","name":"Hardin County Sand & Gravel Inc."},"validFrom":"2013-03-18","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"4003013|0108361|2013-03-18|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0108361","name":"Danny  Elam"},"object":{"type":"operator","id":"0127393","name":"Childer's Hill Gravel, LLC"},"validFrom":"2013-03-18","validTo":"2015-07-05","current":false,"derived":true,"evidenceMineId":"4003013","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"4003013|0127393|2013-03-18|0108361|2013-03-18|19504"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0139493","name":"Crump Sand & Gravel Inc."},"object":{"type":"mine","id":"4003013","name":"Hardin County Sand & Gravel Inc."},"validFrom":"2015-07-06","validTo":"2018-08-26","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"4003013|0139493|2015-07-06|2018-08-26"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0104973","name":"Seth Jonathan  Smith"},"object":{"type":"mine","id":"4003013","name":"Hardin County Sand & Gravel Inc."},"validFrom":"2015-07-06","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"4003013|0104973|2015-07-06|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0104973","name":"Seth Jonathan  Smith"},"object":{"type":"operator","id":"0139493","name":"Crump Sand & Gravel Inc."},"validFrom":"2015-07-06","validTo":"2018-08-26","current":false,"derived":true,"evidenceMineId":"4003013","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"4003013|0139493|2015-07-06|0104973|2015-07-06|18356"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0158753","name":"HARDIN COUNTY SAND & GRAVEL INC"},"object":{"type":"mine","id":"4003013","name":"Hardin County Sand & Gravel Inc."},"validFrom":"2018-08-27","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"4003013|0158753|2018-08-27|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0142881","name":"Justin  Lane"},"object":{"type":"mine","id":"4003013","name":"Hardin County Sand & Gravel Inc."},"validFrom":"2018-08-27","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"4003013|0142881|2018-08-27|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0142881","name":"Justin  Lane"},"object":{"type":"operator","id":"0158753","name":"HARDIN COUNTY SAND & GRAVEL INC"},"validFrom":"2018-08-27","validTo":null,"current":true,"derived":true,"evidenceMineId":"4003013","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"4003013|0158753|2018-08-27|0142881|2018-08-27|28973"}}],"coverage":{"historyRecords":4,"edgeCount":12,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4003013","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"}}