{"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":"2301906","name":"PLANT #1"},"operator":{"type":"operator","id":"L15438","name":"Bassett Sand & Gravel Inc"},"controller":{"type":"controller","id":"M11770","name":"Bassett Kent"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L09235","name":"Tri-County Sand & Gravel"},"object":{"type":"mine","id":"2301906","name":"PLANT #1"},"validFrom":"1984-08-01","validTo":"1987-01-05","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2301906|L09235|1984-08-01|1987-01-05"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M07269","name":"Harris Charles"},"object":{"type":"mine","id":"2301906","name":"PLANT #1"},"validFrom":"1984-08-01","validTo":"1987-01-05","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2301906|M07269|1984-08-01|1987-01-05"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M07269","name":"Harris Charles"},"object":{"type":"operator","id":"L09235","name":"Tri-County Sand & Gravel"},"validFrom":"1984-08-01","validTo":"1987-01-05","current":false,"derived":true,"evidenceMineId":"2301906","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2301906|L09235|1984-08-01|M07269|1984-08-01|140543"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L09236","name":"G & D Sand & Gravel"},"object":{"type":"mine","id":"2301906","name":"PLANT #1"},"validFrom":"1987-01-06","validTo":"1988-06-22","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2301906|L09236|1987-01-06|1988-06-22"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M07270","name":"Green Alva & Danny Dye"},"object":{"type":"mine","id":"2301906","name":"PLANT #1"},"validFrom":"1987-01-06","validTo":"1988-06-22","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2301906|M07270|1987-01-06|1988-06-22"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M07270","name":"Green Alva & Danny Dye"},"object":{"type":"operator","id":"L09236","name":"G & D Sand & Gravel"},"validFrom":"1987-01-06","validTo":"1988-06-22","current":false,"derived":true,"evidenceMineId":"2301906","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2301906|L09236|1987-01-06|M07270|1987-01-06|140544"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L10350","name":"Dye Sand & Gravel"},"object":{"type":"mine","id":"2301906","name":"PLANT #1"},"validFrom":"1988-06-23","validTo":"1988-07-17","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2301906|L10350|1988-06-23|1988-07-17"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M08072","name":"Dye Dannie"},"object":{"type":"mine","id":"2301906","name":"PLANT #1"},"validFrom":"1988-06-23","validTo":"1988-07-17","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2301906|M08072|1988-06-23|1988-07-17"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M08072","name":"Dye Dannie"},"object":{"type":"operator","id":"L10350","name":"Dye Sand & Gravel"},"validFrom":"1988-06-23","validTo":"1988-07-17","current":false,"derived":true,"evidenceMineId":"2301906","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2301906|L10350|1988-06-23|M08072|1988-06-23|142642"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L10680","name":"Green Sand & Gravel"},"object":{"type":"mine","id":"2301906","name":"PLANT #1"},"validFrom":"1988-07-18","validTo":"1991-04-15","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2301906|L10680|1988-07-18|1991-04-15"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M08292","name":"Alva  Green"},"object":{"type":"mine","id":"2301906","name":"PLANT #1"},"validFrom":"1988-07-18","validTo":"1991-04-15","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2301906|M08292|1988-07-18|1991-04-15"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M08292","name":"Alva  Green"},"object":{"type":"operator","id":"L10680","name":"Green Sand & Gravel"},"validFrom":"1988-07-18","validTo":"1991-04-15","current":false,"derived":true,"evidenceMineId":"2301906","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2301906|L10680|1988-07-18|M08292|1988-07-18|143041"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L12174","name":"Grale Inc"},"object":{"type":"mine","id":"2301906","name":"PLANT #1"},"validFrom":"1991-04-16","validTo":"1997-06-26","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2301906|L12174|1991-04-16|1997-06-26"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M09357","name":"Hale Jered M"},"object":{"type":"mine","id":"2301906","name":"PLANT #1"},"validFrom":"1991-04-16","validTo":"1997-06-26","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2301906|M09357|1991-04-16|1997-06-26"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M09357","name":"Hale Jered M"},"object":{"type":"operator","id":"L12174","name":"Grale Inc"},"validFrom":"1991-04-16","validTo":"1997-06-26","current":false,"derived":true,"evidenceMineId":"2301906","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2301906|L12174|1991-04-16|M09357|1991-04-16|146202"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L15438","name":"Bassett Sand & Gravel Inc"},"object":{"type":"mine","id":"2301906","name":"PLANT #1"},"validFrom":"1997-06-27","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2301906|L15438|1997-06-27|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M11770","name":"Bassett Kent"},"object":{"type":"mine","id":"2301906","name":"PLANT #1"},"validFrom":"1997-06-27","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2301906|M11770|1997-06-27|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M11770","name":"Bassett Kent"},"object":{"type":"operator","id":"L15438","name":"Bassett Sand & Gravel Inc"},"validFrom":"1997-06-27","validTo":null,"current":true,"derived":true,"evidenceMineId":"2301906","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2301906|L15438|1997-06-27|M11770|1997-06-27|152374"}}],"coverage":{"historyRecords":6,"edgeCount":18,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"2301906","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"}}