{"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":"3609775","name":"S. MCCLAIN STONE QUARRY #7"},"operator":{"type":"operator","id":"0063085","name":"S.McClain Stone Co. Inc."},"controller":{"type":"controller","id":"0052753","name":"Stacey  McClain"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"0052753","name":"Stacey  McClain"},"object":{"type":"mine","id":"3609775","name":"S. MCCLAIN STONE QUARRY #7"},"validFrom":"2005-08-09","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3609775|0052753|2005-08-09|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0104045","name":"BC Quarries"},"object":{"type":"mine","id":"3609775","name":"S. MCCLAIN STONE QUARRY #7"},"validFrom":"2008-07-01","validTo":"2018-04-22","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3609775|0104045|2008-07-01|2018-04-22"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0088013","name":"David L  Karp"},"object":{"type":"mine","id":"3609775","name":"S. MCCLAIN STONE QUARRY #7"},"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":"3609775|0088013|2008-07-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0088013","name":"David L  Karp"},"object":{"type":"operator","id":"0104045","name":"BC Quarries"},"validFrom":"2008-07-01","validTo":"2018-04-22","current":false,"derived":true,"evidenceMineId":"3609775","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3609775|0104045|2008-07-01|0088013|2008-07-01|14141"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0130381","name":"David R  Brown"},"object":{"type":"mine","id":"3609775","name":"S. MCCLAIN STONE QUARRY #7"},"validFrom":"2016-12-07","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3609775|0130381|2016-12-07|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0148554","name":"D R Brown's Hauling"},"object":{"type":"mine","id":"3609775","name":"S. MCCLAIN STONE QUARRY #7"},"validFrom":"2018-04-23","validTo":"2026-03-22","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3609775|0148554|2018-04-23|2026-03-22"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0130381","name":"David R  Brown"},"object":{"type":"operator","id":"0148554","name":"D R Brown's Hauling"},"validFrom":"2018-04-23","validTo":"2026-03-22","current":false,"derived":true,"evidenceMineId":"3609775","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3609775|0148554|2018-04-23|0130381|2016-12-07|26153"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0063085","name":"S.McClain Stone Co. Inc."},"object":{"type":"mine","id":"3609775","name":"S. MCCLAIN STONE QUARRY #7"},"validFrom":"2026-03-23","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3609775|0063085|2026-03-23|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0052753","name":"Stacey  McClain"},"object":{"type":"operator","id":"0063085","name":"S.McClain Stone Co. Inc."},"validFrom":"2026-03-23","validTo":null,"current":true,"derived":true,"evidenceMineId":"3609775","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3609775|0063085|2026-03-23|0052753|2005-08-09|6715"}}],"coverage":{"historyRecords":3,"edgeCount":9,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"3609775","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"}}