{"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":"0102535","name":"SIMS PIT"},"operator":{"type":"operator","id":"L12776","name":"Mc Cartney Construction Company Inc"},"controller":{"type":"controller","id":"0071891","name":"Vulcan Materials Company"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L12776","name":"Mc Cartney Construction Company Inc"},"object":{"type":"mine","id":"0102535","name":"SIMS PIT"},"validFrom":"1983-03-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0102535|L12776|1983-03-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M09796","name":"M B  McCartney"},"object":{"type":"mine","id":"0102535","name":"SIMS PIT"},"validFrom":"1983-03-01","validTo":"2018-03-09","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0102535|M09796|1983-03-01|2018-03-09"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M09796","name":"M B  McCartney"},"object":{"type":"operator","id":"L12776","name":"Mc Cartney Construction Company Inc"},"validFrom":"1983-03-01","validTo":"2018-03-09","current":false,"derived":true,"evidenceMineId":"0102535","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0102535|L12776|1983-03-01|M09796|1983-03-01|147544"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0071891","name":"Vulcan Materials Company"},"object":{"type":"mine","id":"0102535","name":"SIMS PIT"},"validFrom":"2018-03-10","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0102535|0071891|2018-03-10|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0071891","name":"Vulcan Materials Company"},"object":{"type":"operator","id":"L12776","name":"Mc Cartney Construction Company Inc"},"validFrom":"2018-03-10","validTo":null,"current":true,"derived":true,"evidenceMineId":"0102535","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0102535|L12776|1983-03-01|0071891|2018-03-10|11085"}}],"coverage":{"historyRecords":2,"edgeCount":5,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"0102535","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"}}