{"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":"2101299","name":"LAKE CITY PIT"},"operator":{"type":"operator","id":"L03288","name":"Cemstone Products Company"},"controller":{"type":"controller","id":"0187783","name":"Tim L  Becken; Thorwald L  Becken"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M02637","name":"Tim L Becken et al"},"object":{"type":"mine","id":"2101299","name":"LAKE CITY PIT"},"validFrom":"1950-01-01","validTo":"2025-08-17","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2101299|M02637|1950-01-01|2025-08-17"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L08409","name":"Lake City Concrete Products Company"},"object":{"type":"mine","id":"2101299","name":"LAKE CITY PIT"},"validFrom":"1950-01-01","validTo":"1985-11-05","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2101299|L08409|1950-01-01|1985-11-05"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M06682","name":"Marce  Walters"},"object":{"type":"mine","id":"2101299","name":"LAKE CITY PIT"},"validFrom":"1950-01-01","validTo":"1985-11-05","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2101299|M06682|1950-01-01|1985-11-05"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M06682","name":"Marce  Walters"},"object":{"type":"operator","id":"L08409","name":"Lake City Concrete Products Company"},"validFrom":"1950-01-01","validTo":"1985-11-05","current":false,"derived":true,"evidenceMineId":"2101299","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2101299|L08409|1950-01-01|M06682|1950-01-01|139087"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L08410","name":"Lake City Ready Mix"},"object":{"type":"mine","id":"2101299","name":"LAKE CITY PIT"},"validFrom":"1985-11-06","validTo":"1991-04-21","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2101299|L08410|1985-11-06|1991-04-21"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M06683","name":"Louis  Boehmke et al"},"object":{"type":"mine","id":"2101299","name":"LAKE CITY PIT"},"validFrom":"1985-11-06","validTo":"1991-04-21","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2101299|M06683|1985-11-06|1991-04-21"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M06683","name":"Louis  Boehmke et al"},"object":{"type":"operator","id":"L08410","name":"Lake City Ready Mix"},"validFrom":"1985-11-06","validTo":"1991-04-21","current":false,"derived":true,"evidenceMineId":"2101299","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2101299|L08410|1985-11-06|M06683|1985-11-06|139088"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L03288","name":"Cemstone Products Company"},"object":{"type":"mine","id":"2101299","name":"LAKE CITY PIT"},"validFrom":"1991-04-22","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2101299|L03288|1991-04-22|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M02637","name":"Tim L Becken et al"},"object":{"type":"operator","id":"L03288","name":"Cemstone Products Company"},"validFrom":"1991-04-22","validTo":"2025-08-17","current":false,"derived":true,"evidenceMineId":"2101299","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2101299|L03288|1991-04-22|M02637|1950-01-01|126324"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M02637","name":"Hammond T Becken et al"},"object":{"type":"operator","id":"L03288","name":"Cemstone Products Company"},"validFrom":"1991-04-22","validTo":"2025-08-17","current":false,"derived":true,"evidenceMineId":"2101299","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2101299|L03288|1991-04-22|M02637|1950-01-01|126325"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0187783","name":"Tim L  Becken et al"},"object":{"type":"mine","id":"2101299","name":"LAKE CITY PIT"},"validFrom":"2025-08-18","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2101299|0187783|2025-08-18|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0187783","name":"Tim L  Becken et al"},"object":{"type":"operator","id":"L03288","name":"Cemstone Products Company"},"validFrom":"2025-08-18","validTo":null,"current":true,"derived":true,"evidenceMineId":"2101299","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2101299|L03288|1991-04-22|0187783|2025-08-18|40002"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0187783","name":"Thorwald L  Becken et al"},"object":{"type":"operator","id":"L03288","name":"Cemstone Products Company"},"validFrom":"2025-08-18","validTo":null,"current":true,"derived":true,"evidenceMineId":"2101299","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2101299|L03288|1991-04-22|0187783|2025-08-18|40003"}}],"coverage":{"historyRecords":6,"edgeCount":13,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"2101299","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"}}