{"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":"1900363","name":"QUINN PERKINS S & G, INC."},"operator":{"type":"operator","id":"L03429","name":"Quinn Perkins S & G Inc"},"controller":{"type":"controller","id":"M02747","name":"E H Perkins Construction Inc"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L03428","name":"Thomas Quinn Company Inc"},"object":{"type":"mine","id":"1900363","name":"QUINN PERKINS S & G, INC."},"validFrom":"1950-01-01","validTo":"1979-09-04","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1900363|L03428|1950-01-01|1979-09-04"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M02746","name":"Edward J  Quinn"},"object":{"type":"mine","id":"1900363","name":"QUINN PERKINS S & G, INC."},"validFrom":"1950-01-01","validTo":"1979-09-04","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1900363|M02746|1950-01-01|1979-09-04"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M02746","name":"Edward J  Quinn"},"object":{"type":"operator","id":"L03428","name":"Thomas Quinn Company Inc"},"validFrom":"1950-01-01","validTo":"1979-09-04","current":false,"derived":true,"evidenceMineId":"1900363","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1900363|L03428|1950-01-01|M02746|1950-01-01|126811"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L03429","name":"Quinn Perkins S & G Inc"},"object":{"type":"mine","id":"1900363","name":"QUINN PERKINS S & G, INC."},"validFrom":"1979-09-05","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1900363|L03429|1979-09-05|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M02747","name":"E H Perkins Construction Inc"},"object":{"type":"mine","id":"1900363","name":"QUINN PERKINS S & G, INC."},"validFrom":"1979-09-05","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1900363|M02747|1979-09-05|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M02747","name":"E H Perkins Construction Inc"},"object":{"type":"operator","id":"L03429","name":"Quinn Perkins S & G Inc"},"validFrom":"1979-09-05","validTo":null,"current":true,"derived":true,"evidenceMineId":"1900363","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1900363|L03429|1979-09-05|M02747|1979-09-05|126812"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1900363","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"}}