{"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":"4502282","name":"Shelton Pit"},"operator":{"type":"operator","id":"L00797","name":"Miles Sand & Gravel Company"},"controller":{"type":"controller","id":"M00659","name":"Walt  Miles"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00659","name":"Walt  Miles et al"},"object":{"type":"mine","id":"4502282","name":"Shelton Pit"},"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":"4502282|M00659|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L03066","name":"Graystone Inc"},"object":{"type":"mine","id":"4502282","name":"Shelton Pit"},"validFrom":"1950-01-01","validTo":"1985-05-15","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4502282|L03066|1950-01-01|1985-05-15"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M01704","name":"Graystone Corp"},"object":{"type":"mine","id":"4502282","name":"Shelton Pit"},"validFrom":"1950-01-01","validTo":"1985-05-15","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4502282|M01704|1950-01-01|1985-05-15"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M01704","name":"Graystone Corp"},"object":{"type":"operator","id":"L03066","name":"Graystone Inc"},"validFrom":"1950-01-01","validTo":"1985-05-15","current":false,"derived":true,"evidenceMineId":"4502282","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4502282|L03066|1950-01-01|M01704|1950-01-01|120446"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M01125","name":"Harbor Resources"},"object":{"type":"mine","id":"4502282","name":"Shelton Pit"},"validFrom":"1985-05-15","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4502282|M01125|1985-05-15|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L07985","name":"Cascade Pumice Inc"},"object":{"type":"mine","id":"4502282","name":"Shelton Pit"},"validFrom":"1985-05-16","validTo":"1989-04-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4502282|L07985|1985-05-16|1989-04-30"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M01125","name":"Harbor Resources"},"object":{"type":"operator","id":"L07985","name":"Cascade Pumice Inc"},"validFrom":"1985-05-16","validTo":"1989-04-30","current":false,"derived":true,"evidenceMineId":"4502282","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4502282|L07985|1985-05-16|M01125|1985-05-15|116925"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L00797","name":"Miles Sand & Gravel Company"},"object":{"type":"mine","id":"4502282","name":"Shelton Pit"},"validFrom":"1989-05-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4502282|L00797|1989-05-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00659","name":"Walt  Miles et al"},"object":{"type":"operator","id":"L00797","name":"Miles Sand & Gravel Company"},"validFrom":"1989-05-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"4502282","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4502282|L00797|1989-05-01|M00659|1950-01-01|113919"}}],"coverage":{"historyRecords":3,"edgeCount":9,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4502282","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"}}