{"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":"4102985","name":"Sand Pit No 1"},"operator":{"type":"operator","id":"L03905","name":"E & B Sand & Stone Inc"},"controller":{"type":"controller","id":"M03128","name":"B H  Goodman; Edna C  Goodman"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L03905","name":"E & B Sand & Stone Inc"},"object":{"type":"mine","id":"4102985","name":"Sand Pit No 1"},"validFrom":"1980-03-01","validTo":"1981-04-19","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4102985|L03905|1980-03-01|1981-04-19"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M03128","name":"Edna C  Goodman  et al"},"object":{"type":"mine","id":"4102985","name":"Sand Pit No 1"},"validFrom":"1980-03-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4102985|M03128|1980-03-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M03128","name":"Edna C  Goodman  et al"},"object":{"type":"operator","id":"L03905","name":"E & B Sand & Stone Inc"},"validFrom":"1980-03-01","validTo":"1981-04-19","current":false,"derived":true,"evidenceMineId":"4102985","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4102985|L03905|1980-03-01|M03128|1980-03-01|127970"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M03128","name":"B H  Goodman  et al"},"object":{"type":"operator","id":"L03905","name":"E & B Sand & Stone Inc"},"validFrom":"1980-03-01","validTo":"1981-04-19","current":false,"derived":true,"evidenceMineId":"4102985","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4102985|L03905|1980-03-01|M03128|1980-03-01|127971"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L05141","name":"Sand & Equipment"},"object":{"type":"mine","id":"4102985","name":"Sand Pit No 1"},"validFrom":"1981-04-20","validTo":"1981-07-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4102985|L05141|1981-04-20|1981-07-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M04151","name":"Norsworthy John"},"object":{"type":"mine","id":"4102985","name":"Sand Pit No 1"},"validFrom":"1981-04-20","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4102985|M04151|1981-04-20|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M04151","name":"Norsworthy John"},"object":{"type":"operator","id":"L05141","name":"Sand & Equipment"},"validFrom":"1981-04-20","validTo":"1981-07-31","current":false,"derived":true,"evidenceMineId":"4102985","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4102985|L05141|1981-04-20|M04151|1981-04-20|131208"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L03905","name":"E & B Sand & Stone Inc"},"object":{"type":"mine","id":"4102985","name":"Sand Pit No 1"},"validFrom":"1981-08-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4102985|L03905|1981-08-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M03128","name":"B H  Goodman  et al"},"object":{"type":"operator","id":"L03905","name":"E & B Sand & Stone Inc"},"validFrom":"1981-08-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"4102985","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4102985|L03905|1981-08-01|M03128|1980-03-01|127972"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M03128","name":"Edna C  Goodman  et al"},"object":{"type":"operator","id":"L03905","name":"E & B Sand & Stone Inc"},"validFrom":"1981-08-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"4102985","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"4102985|L03905|1981-08-01|M03128|1980-03-01|127973"}}],"coverage":{"historyRecords":5,"edgeCount":10,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"4102985","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"}}