{"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":"2026-10-17T05:35:58.500035+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":"1202409","name":"243 Quarry"},"operator":{"type":"operator","id":"L11249","name":"US Aggregates LLC"},"controller":{"type":"controller","id":"M01806","name":"The Heritage Group"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M01806","name":"The Heritage Group"},"object":{"type":"mine","id":"1202409","name":"243 Quarry"},"validFrom":"1950-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1202409|M01806|1950-01-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M02905","name":"Kenneth E  Steiner Jr"},"object":{"type":"mine","id":"1202409","name":"243 Quarry"},"validFrom":"1978-03-09","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1202409|M02905|1978-03-09|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M01806","name":"The Heritage Group"},"object":{"type":"mine","id":"1202409","name":"243 Quarry"},"validFrom":"1989-06-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1202409|M01806|1989-06-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L03618","name":"S&G Excavating, Inc."},"object":{"type":"mine","id":"1202409","name":"243 Quarry"},"validFrom":"2008-06-17","validTo":"2012-03-29","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1202409|L03618|2008-06-17|2012-03-29"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M02905","name":"Kenneth E  Steiner Jr"},"object":{"type":"operator","id":"L03618","name":"S&G Excavating, Inc."},"validFrom":"2008-06-17","validTo":"2012-03-29","current":false,"derived":true,"evidenceMineId":"1202409","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1202409|L03618|2008-06-17|M02905|1978-03-09|127354"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0097473","name":"Greg  Gould"},"object":{"type":"mine","id":"1202409","name":"243 Quarry"},"validFrom":"2010-11-04","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1202409|0097473|2010-11-04|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0115005","name":"North American Limestone Corporation"},"object":{"type":"mine","id":"1202409","name":"243 Quarry"},"validFrom":"2012-03-30","validTo":"2014-06-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1202409|0115005|2012-03-30|2014-06-30"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0097473","name":"Greg  Gould"},"object":{"type":"operator","id":"0115005","name":"North American Limestone Corporation"},"validFrom":"2012-03-30","validTo":"2014-06-30","current":false,"derived":true,"evidenceMineId":"1202409","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1202409|0115005|2012-03-30|0097473|2010-11-04|15983"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0134354","name":"NALC, LLC"},"object":{"type":"mine","id":"1202409","name":"243 Quarry"},"validFrom":"2014-07-01","validTo":"2019-05-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1202409|0134354|2014-07-01|2019-05-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0114325","name":"Dana  Boyd et al"},"object":{"type":"mine","id":"1202409","name":"243 Quarry"},"validFrom":"2014-07-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1202409|0114325|2014-07-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0114325","name":"Dana  Boyd et al"},"object":{"type":"operator","id":"0134354","name":"NALC, LLC"},"validFrom":"2014-07-01","validTo":"2019-05-31","current":false,"derived":true,"evidenceMineId":"1202409","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1202409|0134354|2014-07-01|0114325|2014-07-01|21480"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0114325","name":"Greg  Gould et al"},"object":{"type":"operator","id":"0134354","name":"NALC, LLC"},"validFrom":"2014-07-01","validTo":"2019-05-31","current":false,"derived":true,"evidenceMineId":"1202409","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1202409|0134354|2014-07-01|0114325|2014-07-01|21481"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L11249","name":"Heritage Aggregates, LLC"},"object":{"type":"mine","id":"1202409","name":"243 Quarry"},"validFrom":"2019-06-01","validTo":"2020-04-20","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1202409|L11249|2019-06-01|2020-04-20"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M01806","name":"The Heritage Group"},"object":{"type":"operator","id":"L11249","name":"Heritage Aggregates, LLC"},"validFrom":"2019-06-01","validTo":"2020-04-20","current":false,"derived":true,"evidenceMineId":"1202409","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1202409|L11249|2019-06-01|M01806|1989-06-01|121336"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L02006","name":"US Aggregates Inc"},"object":{"type":"mine","id":"1202409","name":"243 Quarry"},"validFrom":"2020-04-21","validTo":"2026-06-17","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1202409|L02006|2020-04-21|2026-06-17"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M01806","name":"The Heritage Group"},"object":{"type":"operator","id":"L02006","name":"US Aggregates Inc"},"validFrom":"2020-04-21","validTo":"2026-06-17","current":false,"derived":true,"evidenceMineId":"1202409","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1202409|L02006|2020-04-21|M01806|1950-01-01|121301"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L11249","name":"US Aggregates LLC"},"object":{"type":"mine","id":"1202409","name":"243 Quarry"},"validFrom":"2026-06-18","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1202409|L11249|2026-06-18|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M01806","name":"The Heritage Group"},"object":{"type":"operator","id":"L11249","name":"US Aggregates LLC"},"validFrom":"2026-06-18","validTo":null,"current":true,"derived":true,"evidenceMineId":"1202409","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1202409|L11249|2026-06-18|M01806|1989-06-01|121337"}}],"coverage":{"historyRecords":7,"edgeCount":18,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1202409","dataSource":"postgres","snapshotId":"2026-10-17T05:35:58.500035+00:00","completedAt":"2026-10-17T06:17:15.228Z","sourceCount":20,"totalRows":15450873,"relationshipSemantics":"valid time; null validTo means current or open-ended in the source"}}