{"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":"2026-10-13T11:19:05.459773+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":"4502665","name":"Granite Falls Quarry"},"operator":{"type":"operator","id":"L12791","name":"Iron Mountain Quarry"},"controller":{"type":"controller","id":"M09806","name":"James  Burnett; Lawrence P.  Hughes"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L04206","name":"Builders Rock Inc"},"object":{"type":"mine","id":"4502665","name":"Granite Falls Quarry"},"validFrom":"1979-01-01","validTo":"1985-06-28","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4502665|L04206|1979-01-01|1985-06-28"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M03386","name":"Jerry  Morey"},"object":{"type":"mine","id":"4502665","name":"Granite Falls Quarry"},"validFrom":"1979-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4502665|M03386|1979-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M03386","name":"Jerry  Morey"},"object":{"type":"operator","id":"L04206","name":"Builders Rock Inc"},"validFrom":"1979-01-01","validTo":"1985-06-28","current":false,"derived":true,"evidenceMineId":"4502665","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4502665|L04206|1979-01-01|M03386|1979-01-01|128919"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00467","name":"Burlington Resources Inc"},"object":{"type":"mine","id":"4502665","name":"Granite Falls Quarry"},"validFrom":"1981-11-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4502665|M00467|1981-11-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L08379","name":"Meridian Aggregates Company"},"object":{"type":"mine","id":"4502665","name":"Granite Falls Quarry"},"validFrom":"1985-06-29","validTo":"1991-02-28","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4502665|L08379|1985-06-29|1991-02-28"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00467","name":"Burlington Resources Inc"},"object":{"type":"operator","id":"L08379","name":"Meridian Aggregates Company"},"validFrom":"1985-06-29","validTo":"1991-02-28","current":false,"derived":true,"evidenceMineId":"4502665","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4502665|L08379|1985-06-29|M00467|1981-11-01|111570"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M09806","name":"Lawrence P.  Hughes et al"},"object":{"type":"mine","id":"4502665","name":"Granite Falls Quarry"},"validFrom":"1988-08-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4502665|M09806|1988-08-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L13605","name":"Meridian Aggregates Company"},"object":{"type":"mine","id":"4502665","name":"Granite Falls Quarry"},"validFrom":"1991-03-01","validTo":"2001-04-09","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4502665|L13605|1991-03-01|2001-04-09"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M09944","name":"Meridian Aggregates Company LP"},"object":{"type":"mine","id":"4502665","name":"Granite Falls Quarry"},"validFrom":"1991-03-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4502665|M09944|1991-03-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M09944","name":"Meridian Aggregates Company LP"},"object":{"type":"operator","id":"L13605","name":"Meridian Aggregates Company"},"validFrom":"1991-03-01","validTo":"2001-04-09","current":false,"derived":true,"evidenceMineId":"4502665","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4502665|L13605|1991-03-01|M09944|1991-03-01|147971"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00174","name":"Martin Marietta Materials Inc"},"object":{"type":"mine","id":"4502665","name":"Granite Falls Quarry"},"validFrom":"2001-04-03","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4502665|M00174|2001-04-03|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L18213","name":"Meridian Aggregates Company LP"},"object":{"type":"mine","id":"4502665","name":"Granite Falls Quarry"},"validFrom":"2001-04-10","validTo":"2004-09-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4502665|L18213|2001-04-10|2004-09-30"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00174","name":"Martin Marietta Materials Inc"},"object":{"type":"operator","id":"L18213","name":"Meridian Aggregates Company LP"},"validFrom":"2001-04-10","validTo":"2004-09-30","current":false,"derived":true,"evidenceMineId":"4502665","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4502665|L18213|2001-04-10|M00174|2001-04-03|106408"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L12791","name":"Iron Mountain Quarry"},"object":{"type":"mine","id":"4502665","name":"Granite Falls Quarry"},"validFrom":"2004-10-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4502665|L12791|2004-10-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M09806","name":"Lawrence P.  Hughes et al"},"object":{"type":"operator","id":"L12791","name":"Iron Mountain Quarry"},"validFrom":"2004-10-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"4502665","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4502665|L12791|2004-10-01|M09806|1988-08-01|147576"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M09806","name":"James  Burnett et al"},"object":{"type":"operator","id":"L12791","name":"Iron Mountain Quarry"},"validFrom":"2004-10-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"4502665","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4502665|L12791|2004-10-01|M09806|1988-08-01|147577"}}],"coverage":{"historyRecords":6,"edgeCount":16,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4502665","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804,"relationshipSemantics":"valid time; null validTo means current or open-ended in the source"}}