{"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":"0503930","name":"CASTLE ROCK QUARRY"},"operator":{"type":"operator","id":"L11838","name":"Centennial Materials Company"},"controller":{"type":"controller","id":"M05102","name":"Edward C  Levy Jr"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00086","name":"Hallett Construction Company"},"object":{"type":"mine","id":"0503930","name":"CASTLE ROCK QUARRY"},"validFrom":"1950-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0503930|M00086|1950-01-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M05002","name":"Shelton Stanley E"},"object":{"type":"mine","id":"0503930","name":"CASTLE ROCK QUARRY"},"validFrom":"1982-10-29","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0503930|M05002|1982-10-29|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L06273","name":"Castle Rock Aggregates"},"object":{"type":"mine","id":"0503930","name":"CASTLE ROCK QUARRY"},"validFrom":"1984-02-01","validTo":"1984-08-07","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0503930|L06273|1984-02-01|1984-08-07"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M05002","name":"Shelton Stanley E"},"object":{"type":"operator","id":"L06273","name":"Castle Rock Aggregates"},"validFrom":"1984-02-01","validTo":"1984-08-07","current":false,"derived":true,"evidenceMineId":"0503930","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0503930|L06273|1984-02-01|M05002|1982-10-29|133422"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L00046","name":"Hallett Construction Company"},"object":{"type":"mine","id":"0503930","name":"CASTLE ROCK QUARRY"},"validFrom":"1984-08-08","validTo":"1986-10-13","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0503930|L00046|1984-08-08|1986-10-13"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00086","name":"Hallett Construction Company"},"object":{"type":"operator","id":"L00046","name":"Hallett Construction Company"},"validFrom":"1984-08-08","validTo":"1986-10-13","current":false,"derived":true,"evidenceMineId":"0503930","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0503930|L00046|1984-08-08|M00086|1950-01-01|103893"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M06971","name":"Mid America Materials Company"},"object":{"type":"mine","id":"0503930","name":"CASTLE ROCK QUARRY"},"validFrom":"1986-09-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0503930|M06971|1986-09-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L09703","name":"Hallett Materials"},"object":{"type":"mine","id":"0503930","name":"CASTLE ROCK QUARRY"},"validFrom":"1986-10-14","validTo":"1991-04-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0503930|L09703|1986-10-14|1991-04-30"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M06971","name":"Mid America Materials Company"},"object":{"type":"operator","id":"L09703","name":"Hallett Materials"},"validFrom":"1986-10-14","validTo":"1991-04-30","current":false,"derived":true,"evidenceMineId":"0503930","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0503930|L09703|1986-10-14|M06971|1986-09-01|139716"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L11838","name":"Centennial Materials Company"},"object":{"type":"mine","id":"0503930","name":"CASTLE ROCK QUARRY"},"validFrom":"1991-05-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0503930|L11838|1991-05-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M05102","name":"Edward C  Levy Jr et al"},"object":{"type":"mine","id":"0503930","name":"CASTLE ROCK QUARRY"},"validFrom":"1991-05-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0503930|M05102|1991-05-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M05102","name":"Edward C  Levy Jr et al"},"object":{"type":"operator","id":"L11838","name":"Centennial Materials Company"},"validFrom":"1991-05-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"0503930","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0503930|L11838|1991-05-01|M05102|1991-05-01|133707"}}],"coverage":{"historyRecords":4,"edgeCount":12,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"0503930","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"}}