{"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":"4300566","name":"O'Neil Sand & Gravel, LLC"},"operator":{"type":"operator","id":"L35834","name":"M&M Excavating, Inc."},"controller":{"type":"controller","id":"M35834","name":"Michael  O'Neil"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-18T09:31:49.615908+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M35834","name":"Michael  O'Neil"},"object":{"type":"mine","id":"4300566","name":"O'Neil Sand & Gravel, LLC"},"validFrom":"1990-11-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"4300566|M35834|1990-11-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L35834","name":"M&M Excavating, Inc."},"object":{"type":"mine","id":"4300566","name":"O'Neil Sand & Gravel, LLC"},"validFrom":"2001-10-29","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"4300566|L35834|2001-10-29|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M35834","name":"Michael  O'Neil"},"object":{"type":"operator","id":"L35834","name":"M&M Excavating, Inc."},"validFrom":"2001-10-29","validTo":null,"current":true,"derived":true,"evidenceMineId":"4300566","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"4300566|L35834|2001-10-29|M35834|1990-11-01|164830"}}],"coverage":{"historyRecords":1,"edgeCount":3,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4300566","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"}}