{"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":"1102744","name":"Heine Quarry (Portable)"},"operator":{"type":"operator","id":"L15722","name":"Fischer Excavating Inc"},"controller":{"type":"controller","id":"M11986","name":"Wayne V  Fischer; Joe L.  Fischer"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L32915","name":"Economy Excavating Company"},"object":{"type":"mine","id":"1102744","name":"Heine Quarry (Portable)"},"validFrom":"1980-07-01","validTo":"1998-02-09","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1102744|L32915|1980-07-01|1998-02-09"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M32915","name":"William  Oppold"},"object":{"type":"mine","id":"1102744","name":"Heine Quarry (Portable)"},"validFrom":"1980-07-01","validTo":"1998-02-09","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1102744|M32915|1980-07-01|1998-02-09"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M32915","name":"William  Oppold"},"object":{"type":"operator","id":"L32915","name":"Economy Excavating Company"},"validFrom":"1980-07-01","validTo":"1998-02-09","current":false,"derived":true,"evidenceMineId":"1102744","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1102744|L32915|1980-07-01|M32915|1980-07-01|161436"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L15722","name":"Fischer Excavating Inc"},"object":{"type":"mine","id":"1102744","name":"Heine Quarry (Portable)"},"validFrom":"1998-02-10","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1102744|L15722|1998-02-10|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M11986","name":"Joe L.  Fischer et al"},"object":{"type":"mine","id":"1102744","name":"Heine Quarry (Portable)"},"validFrom":"1998-02-10","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1102744|M11986|1998-02-10|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M11986","name":"Joe L.  Fischer et al"},"object":{"type":"operator","id":"L15722","name":"Fischer Excavating Inc"},"validFrom":"1998-02-10","validTo":null,"current":true,"derived":true,"evidenceMineId":"1102744","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1102744|L15722|1998-02-10|M11986|1998-02-10|152866"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M11986","name":"Wayne V  Fischer et al"},"object":{"type":"operator","id":"L15722","name":"Fischer Excavating Inc"},"validFrom":"1998-02-10","validTo":null,"current":true,"derived":true,"evidenceMineId":"1102744","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1102744|L15722|1998-02-10|M11986|1998-02-10|152867"}}],"coverage":{"historyRecords":3,"edgeCount":7,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1102744","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"}}