{"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":"2026-10-18T09:31:49.615908+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":"4700745","name":"Slobodnik Gravel and Excavating, LLC"},"operator":{"type":"operator","id":"0133737","name":"Slobodnik Gravel and Excavating, LLC"},"controller":{"type":"controller","id":"0113845","name":"Cole W  Szpara"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-18T09:31:49.615908+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L35367","name":"L.R. Slobodnik"},"object":{"type":"mine","id":"4700745","name":"Slobodnik Gravel and Excavating, LLC"},"validFrom":"1990-05-01","validTo":"2014-06-02","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"4700745|L35367|1990-05-01|2014-06-02"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M35367","name":"Laurence  Slobodnik"},"object":{"type":"mine","id":"4700745","name":"Slobodnik Gravel and Excavating, LLC"},"validFrom":"1990-05-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"4700745|M35367|1990-05-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M35367","name":"Laurence  Slobodnik"},"object":{"type":"operator","id":"L35367","name":"L.R. Slobodnik"},"validFrom":"1990-05-01","validTo":"2014-06-02","current":false,"derived":true,"evidenceMineId":"4700745","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"4700745|L35367|1990-05-01|M35367|1990-05-01|164325"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0133737","name":"Slobodnik Gravel and Excavating, LLC"},"object":{"type":"mine","id":"4700745","name":"Slobodnik Gravel and Excavating, LLC"},"validFrom":"2014-06-03","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"4700745|0133737|2014-06-03|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0113845","name":"Cole W  Szpara"},"object":{"type":"mine","id":"4700745","name":"Slobodnik Gravel and Excavating, LLC"},"validFrom":"2014-06-03","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"4700745|0113845|2014-06-03|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0113845","name":"Cole W  Szpara"},"object":{"type":"operator","id":"0133737","name":"Slobodnik Gravel and Excavating, LLC"},"validFrom":"2014-06-03","validTo":null,"current":true,"derived":true,"evidenceMineId":"4700745","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"4700745|0133737|2014-06-03|0113845|2014-06-03|21324"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4700745","dataSource":"postgres","snapshotId":"2026-10-18T09:31:49.615908+00:00","completedAt":"2026-10-18T09:31:49.615Z","sourceCount":20,"totalRows":17915666,"relationshipSemantics":"valid time; null validTo means current or open-ended in the source"}}