{"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":"2026-10-17T05:35:58.500035+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":"4202093","name":"SUNNYSIDE WASTE COAL SITE"},"operator":{"type":"operator","id":"P24344","name":"SUNNYSIDE COGENERATION ASSOCIATES"},"controller":{"type":"controller","id":"C15900","name":"Exelon Corporation; ACI (American Consumer Industries Inc)"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"P22615","name":"Savage Industries Inc"},"object":{"type":"mine","id":"4202093","name":"SUNNYSIDE WASTE COAL SITE"},"validFrom":"1993-08-01","validTo":"1997-07-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4202093|P22615|1993-08-01|1997-07-30"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C05718","name":"Savage Companies"},"object":{"type":"mine","id":"4202093","name":"SUNNYSIDE WASTE COAL SITE"},"validFrom":"1993-08-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4202093|C05718|1993-08-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C05718","name":"Savage Companies"},"object":{"type":"operator","id":"P22615","name":"Savage Industries Inc"},"validFrom":"1993-08-01","validTo":"1997-07-30","current":false,"derived":true,"evidenceMineId":"4202093","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4202093|P22615|1993-08-01|C05718|1993-08-01|69705"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P23871","name":"Sunnyside Cogeneration Associates"},"object":{"type":"mine","id":"4202093","name":"SUNNYSIDE WASTE COAL SITE"},"validFrom":"1997-07-31","validTo":"2000-01-18","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4202093|P23871|1997-07-31|2000-01-18"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C15665","name":"Northern States Power Co et al"},"object":{"type":"mine","id":"4202093","name":"SUNNYSIDE WASTE COAL SITE"},"validFrom":"1997-07-31","validTo":"2000-01-18","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4202093|C15665|1997-07-31|2000-01-18"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C15665","name":"Northern States Power Co et al"},"object":{"type":"operator","id":"P23871","name":"Sunnyside Cogeneration Associates"},"validFrom":"1997-07-31","validTo":"2000-01-18","current":false,"derived":true,"evidenceMineId":"4202093","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4202093|P23871|1997-07-31|C15665|1997-07-31|96482"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P24344","name":"Sunnyside Cogeneration Associates"},"object":{"type":"mine","id":"4202093","name":"SUNNYSIDE WASTE COAL SITE"},"validFrom":"2000-01-19","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4202093|P24344|2000-01-19|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"C15900","name":"Exelon Corporation et al"},"object":{"type":"mine","id":"4202093","name":"SUNNYSIDE WASTE COAL SITE"},"validFrom":"2000-01-19","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4202093|C15900|2000-01-19|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C15900","name":"Exelon Corporation et al"},"object":{"type":"operator","id":"P24344","name":"Sunnyside Cogeneration Associates"},"validFrom":"2000-01-19","validTo":null,"current":true,"derived":true,"evidenceMineId":"4202093","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4202093|P24344|2000-01-19|C15900|2000-01-19|97555"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C15900","name":"ACI (American Consumer Industries Inc) et al"},"object":{"type":"operator","id":"P24344","name":"Sunnyside Cogeneration Associates"},"validFrom":"2000-01-19","validTo":null,"current":true,"derived":true,"evidenceMineId":"4202093","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"4202093|P24344|2000-01-19|C15900|2000-01-19|97556"}}],"coverage":{"historyRecords":4,"edgeCount":10,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4202093","dataSource":"postgres","snapshotId":"2026-10-17T05:35:58.500035+00:00","completedAt":"2026-10-17T06:17:15.228Z","sourceCount":20,"totalRows":15450873,"relationshipSemantics":"valid time; null validTo means current or open-ended in the source"}}