{"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":"2003195","name":"Dansville Pit"},"operator":{"type":"operator","id":"0185693","name":"Leavitt & Starck Excavating, Inc"},"controller":{"type":"controller","id":"0172880","name":"Dean  Leavitt; Thomas  Starck"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L18189","name":"J R'S Sand & Gravel Inc"},"object":{"type":"mine","id":"2003195","name":"Dansville Pit"},"validFrom":"2001-04-01","validTo":"2023-01-29","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2003195|L18189|2001-04-01|2023-01-29"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M13888","name":"Julius J  Raica Jr"},"object":{"type":"mine","id":"2003195","name":"Dansville Pit"},"validFrom":"2001-04-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2003195|M13888|2001-04-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M13888","name":"Julius J  Raica Jr"},"object":{"type":"operator","id":"L18189","name":"J R'S Sand & Gravel Inc"},"validFrom":"2001-04-01","validTo":"2023-01-29","current":false,"derived":true,"evidenceMineId":"2003195","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2003195|L18189|2001-04-01|M13888|2001-04-01|157253"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0172880","name":"Thomas  Starck et al"},"object":{"type":"mine","id":"2003195","name":"Dansville Pit"},"validFrom":"2022-10-12","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2003195|0172880|2022-10-12|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0185693","name":"Leavitt & Starck Excavating, Inc"},"object":{"type":"mine","id":"2003195","name":"Dansville Pit"},"validFrom":"2023-01-30","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2003195|0185693|2023-01-30|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0172880","name":"Thomas  Starck et al"},"object":{"type":"operator","id":"0185693","name":"Leavitt & Starck Excavating, Inc"},"validFrom":"2023-01-30","validTo":null,"current":true,"derived":true,"evidenceMineId":"2003195","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2003195|0185693|2023-01-30|0172880|2022-10-12|36721"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0172880","name":"Dean  Leavitt et al"},"object":{"type":"operator","id":"0185693","name":"Leavitt & Starck Excavating, Inc"},"validFrom":"2023-01-30","validTo":null,"current":true,"derived":true,"evidenceMineId":"2003195","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2003195|0185693|2023-01-30|0172880|2022-10-12|36722"}}],"coverage":{"historyRecords":3,"edgeCount":7,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"2003195","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"}}