{"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":"3608671","name":"WAYCO SAND & GRAVEL"},"operator":{"type":"operator","id":"L40060","name":"Wayco Inc"},"controller":{"type":"controller","id":"0131561","name":"Gary  Podunajec"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L40060","name":"Wayco Inc"},"object":{"type":"mine","id":"3608671","name":"WAYCO SAND & GRAVEL"},"validFrom":"1994-04-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3608671|L40060|1994-04-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M35413","name":"Joseph  Podunajec et al"},"object":{"type":"mine","id":"3608671","name":"WAYCO SAND & GRAVEL"},"validFrom":"1994-04-01","validTo":"2016-04-06","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3608671|M35413|1994-04-01|2016-04-06"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M35413","name":"Joseph  Podunajec et al"},"object":{"type":"operator","id":"L40060","name":"Wayco Inc"},"validFrom":"1994-04-01","validTo":"2016-04-06","current":false,"derived":true,"evidenceMineId":"3608671","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3608671|L40060|1994-04-01|M35413|1994-04-01|164370"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0131561","name":"Gary  Podunajec"},"object":{"type":"mine","id":"3608671","name":"WAYCO SAND & GRAVEL"},"validFrom":"2016-04-07","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3608671|0131561|2016-04-07|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0131561","name":"Gary  Podunajec"},"object":{"type":"operator","id":"L40060","name":"Wayco Inc"},"validFrom":"2016-04-07","validTo":null,"current":true,"derived":true,"evidenceMineId":"3608671","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3608671|L40060|1994-04-01|0131561|2016-04-07|26397"}}],"coverage":{"historyRecords":2,"edgeCount":5,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"3608671","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"}}