{"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":"2900426","name":"Tome Pit"},"operator":{"type":"operator","id":"0140833","name":"Valley Materials"},"controller":{"type":"controller","id":"0120181","name":"Eric L  Gibson"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L30855","name":"Belen Sand & Gravel"},"object":{"type":"mine","id":"2900426","name":"Tome Pit"},"validFrom":"1950-01-01","validTo":"2015-09-10","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2900426|L30855|1950-01-01|2015-09-10"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M30855","name":"William T Stone"},"object":{"type":"mine","id":"2900426","name":"Tome Pit"},"validFrom":"1950-01-01","validTo":"2004-11-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2900426|M30855|1950-01-01|2004-11-30"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M30855","name":"William T Stone"},"object":{"type":"operator","id":"L30855","name":"Belen Sand & Gravel"},"validFrom":"1950-01-01","validTo":"2004-11-30","current":false,"derived":true,"evidenceMineId":"2900426","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2900426|L30855|1950-01-01|M30855|1950-01-01|159064"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0046709","name":"Valley Improvement Association"},"object":{"type":"mine","id":"2900426","name":"Tome Pit"},"validFrom":"2004-12-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2900426|0046709|2004-12-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0046709","name":"Valley Improvement Association"},"object":{"type":"operator","id":"L30855","name":"Belen Sand & Gravel"},"validFrom":"2004-12-01","validTo":"2015-09-10","current":false,"derived":true,"evidenceMineId":"2900426","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2900426|L30855|1950-01-01|0046709|2004-12-01|5693"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0140833","name":"Valley Materials"},"object":{"type":"mine","id":"2900426","name":"Tome Pit"},"validFrom":"2015-09-11","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2900426|0140833|2015-09-11|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0120181","name":"Eric L  Gibson"},"object":{"type":"mine","id":"2900426","name":"Tome Pit"},"validFrom":"2015-09-11","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2900426|0120181|2015-09-11|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0120181","name":"Eric L  Gibson"},"object":{"type":"operator","id":"0140833","name":"Valley Materials"},"validFrom":"2015-09-11","validTo":null,"current":true,"derived":true,"evidenceMineId":"2900426","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2900426|0140833|2015-09-11|0120181|2015-09-11|23443"}}],"coverage":{"historyRecords":3,"edgeCount":8,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"2900426","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"}}