{"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":"3002321","name":"Spear Pit"},"operator":{"type":"operator","id":"L03997","name":"Talson & Talarico Construction Corp"},"controller":{"type":"controller","id":"M03201","name":"Talson & Talarico Construction Corp"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M01224","name":"Edward  Hayes"},"object":{"type":"mine","id":"3002321","name":"Spear Pit"},"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":"3002321|M01224|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L01378","name":"Special Aggregates Corp"},"object":{"type":"mine","id":"3002321","name":"Spear Pit"},"validFrom":"1978-03-09","validTo":"1980-04-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3002321|L01378|1978-03-09|1980-04-30"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M01224","name":"Edward  Hayes"},"object":{"type":"operator","id":"L01378","name":"Special Aggregates Corp"},"validFrom":"1978-03-09","validTo":"1980-04-30","current":false,"derived":true,"evidenceMineId":"3002321","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3002321|L01378|1978-03-09|M01224|1950-01-01|117572"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M03201","name":"Talson & Talarico Construction Corp"},"object":{"type":"mine","id":"3002321","name":"Spear Pit"},"validFrom":"1980-04-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3002321|M03201|1980-04-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L03997","name":"Talson & Talarico Construction Corp"},"object":{"type":"mine","id":"3002321","name":"Spear Pit"},"validFrom":"1980-05-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3002321|L03997|1980-05-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M03201","name":"Talson & Talarico Construction Corp"},"object":{"type":"operator","id":"L03997","name":"Talson & Talarico Construction Corp"},"validFrom":"1980-05-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"3002321","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3002321|L03997|1980-05-01|M03201|1980-04-01|128434"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"3002321","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"}}