{"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":"2003169","name":"BILL BURTON PIT"},"operator":{"type":"operator","id":"0186113","name":"Precision Excavation, Inc."},"controller":{"type":"controller","id":"0173340","name":"Sarah B Burton; Frederick George Burton Jr"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L17708","name":"Newberry Redi-Mix Inc"},"object":{"type":"mine","id":"2003169","name":"BILL BURTON PIT"},"validFrom":"2000-08-01","validTo":"2014-05-07","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2003169|L17708|2000-08-01|2014-05-07"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M13504","name":"William J Burton"},"object":{"type":"mine","id":"2003169","name":"BILL BURTON PIT"},"validFrom":"2000-08-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2003169|M13504|2000-08-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M13504","name":"William J Burton"},"object":{"type":"operator","id":"L17708","name":"Newberry Redi-Mix Inc"},"validFrom":"2000-08-01","validTo":"2014-05-07","current":false,"derived":true,"evidenceMineId":"2003169","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2003169|L17708|2000-08-01|M13504|2000-08-01|156383"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0133313","name":"Precision Redi-Mix Inc."},"object":{"type":"mine","id":"2003169","name":"BILL BURTON PIT"},"validFrom":"2014-05-08","validTo":"2022-12-04","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2003169|0133313|2014-05-08|2022-12-04"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0113441","name":"Frederick G  Burton Jr"},"object":{"type":"mine","id":"2003169","name":"BILL BURTON PIT"},"validFrom":"2014-05-08","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2003169|0113441|2014-05-08|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0113441","name":"Frederick G  Burton Jr"},"object":{"type":"operator","id":"0133313","name":"Precision Redi-Mix Inc."},"validFrom":"2014-05-08","validTo":"2022-12-04","current":false,"derived":true,"evidenceMineId":"2003169","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2003169|0133313|2014-05-08|0113441|2014-05-08|21209"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0186113","name":"Precision Excavation, Inc."},"object":{"type":"mine","id":"2003169","name":"BILL BURTON PIT"},"validFrom":"2022-12-05","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2003169|0186113|2022-12-05|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0173340","name":"Sarah B Burton et al"},"object":{"type":"mine","id":"2003169","name":"BILL BURTON PIT"},"validFrom":"2022-12-05","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2003169|0173340|2022-12-05|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0173340","name":"Sarah B Burton et al"},"object":{"type":"operator","id":"0186113","name":"Precision Excavation, Inc."},"validFrom":"2022-12-05","validTo":null,"current":true,"derived":true,"evidenceMineId":"2003169","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2003169|0186113|2022-12-05|0173340|2022-12-05|36787"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0173340","name":"Frederick George Burton Jr et al"},"object":{"type":"operator","id":"0186113","name":"Precision Excavation, Inc."},"validFrom":"2022-12-05","validTo":null,"current":true,"derived":true,"evidenceMineId":"2003169","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2003169|0186113|2022-12-05|0173340|2022-12-05|36788"}}],"coverage":{"historyRecords":4,"edgeCount":10,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"2003169","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"}}