{"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":"3607828","name":"Leesport Quarry"},"operator":{"type":"operator","id":"L00335","name":"New Enterprise Stone & Lime Co., Inc."},"controller":{"type":"controller","id":"M00271","name":"New Enterprise Stone & Lime Company Inc"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00271","name":"New Enterprise Stone & Lime Company Inc"},"object":{"type":"mine","id":"3607828","name":"Leesport 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":"3607828|M00271|1950-01-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00768","name":"John R  Hannon"},"object":{"type":"mine","id":"3607828","name":"Leesport Quarry"},"validFrom":"1950-01-01","validTo":"2014-04-13","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3607828|M00768|1950-01-01|2014-04-13"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L00908","name":"Berks Products Corp"},"object":{"type":"mine","id":"3607828","name":"Leesport Quarry"},"validFrom":"1986-09-01","validTo":"2017-02-10","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3607828|L00908|1986-09-01|2017-02-10"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00768","name":"John R  Hannon"},"object":{"type":"operator","id":"L00908","name":"Berks Products Corp"},"validFrom":"1986-09-01","validTo":"2014-04-13","current":false,"derived":true,"evidenceMineId":"3607828","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3607828|L00908|1986-09-01|M00768|1950-01-01|114692"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0113081","name":"Jeff  Nielsen"},"object":{"type":"mine","id":"3607828","name":"Leesport Quarry"},"validFrom":"2014-04-14","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3607828|0113081|2014-04-14|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0113081","name":"Jeff  Nielsen"},"object":{"type":"operator","id":"L00908","name":"Berks Products Corp"},"validFrom":"2014-04-14","validTo":"2017-02-10","current":false,"derived":true,"evidenceMineId":"3607828","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3607828|L00908|1986-09-01|0113081|2014-04-14|21049"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L00335","name":"New Enterprise Stone & Lime Co., Inc."},"object":{"type":"mine","id":"3607828","name":"Leesport Quarry"},"validFrom":"2017-02-11","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3607828|L00335|2017-02-11|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00271","name":"New Enterprise Stone & Lime Company Inc"},"object":{"type":"operator","id":"L00335","name":"New Enterprise Stone & Lime Co., Inc."},"validFrom":"2017-02-11","validTo":null,"current":true,"derived":true,"evidenceMineId":"3607828","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3607828|L00335|2017-02-11|M00271|1950-01-01|108697"}}],"coverage":{"historyRecords":3,"edgeCount":8,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"3607828","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"}}