{"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":"4501066","name":"Anacortes Quarry"},"operator":{"type":"operator","id":"0092385","name":"Lakeside Industries, Inc"},"controller":{"type":"controller","id":"M00514","name":"Lakeside Industries Inc."},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L02208","name":"Marine Asphalt Inc"},"object":{"type":"mine","id":"4501066","name":"Anacortes Quarry"},"validFrom":"1950-01-01","validTo":"2008-06-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4501066|L02208|1950-01-01|2008-06-30"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00514","name":"Lakeside Industries Inc. et al"},"object":{"type":"mine","id":"4501066","name":"Anacortes Quarry"},"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":"4501066|M00514|1950-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00514","name":"Lakeside Industries Inc. et al"},"object":{"type":"operator","id":"L02208","name":"Marine Asphalt Inc"},"validFrom":"1950-01-01","validTo":"2008-06-30","current":false,"derived":true,"evidenceMineId":"4501066","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4501066|L02208|1950-01-01|M00514|1950-01-01|111955"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0092385","name":"Lakeside Industries, Inc"},"object":{"type":"mine","id":"4501066","name":"Anacortes Quarry"},"validFrom":"2008-07-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4501066|0092385|2008-07-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00514","name":"Lakeside Industries Inc. et al"},"object":{"type":"mine","id":"4501066","name":"Anacortes Quarry"},"validFrom":"2008-07-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4501066|M00514|2008-07-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00514","name":"Lakeside Industries Inc. et al"},"object":{"type":"operator","id":"0092385","name":"Lakeside Industries, Inc"},"validFrom":"2008-07-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"4501066","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4501066|0092385|2008-07-01|M00514|2008-07-01|111972"}}],"coverage":{"historyRecords":2,"edgeCount":6,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4501066","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"}}