{"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":"1800192","name":"Patapsco Natural Stone Quarry LLC"},"operator":{"type":"operator","id":"0156594","name":"Patapsco Natural Stone Quarry LLC"},"controller":{"type":"controller","id":"0140063","name":"Kristine  Lamkin Weiffenbach"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L37235","name":"Piccirilli Quarries"},"object":{"type":"mine","id":"1800192","name":"Patapsco Natural Stone Quarry LLC"},"validFrom":"1950-01-01","validTo":"2002-03-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1800192|L37235|1950-01-01|2002-03-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M37235","name":"Piccirilli William J"},"object":{"type":"mine","id":"1800192","name":"Patapsco Natural Stone Quarry LLC"},"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":"1800192|M37235|1950-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M37235","name":"Piccirilli William J"},"object":{"type":"operator","id":"L37235","name":"Piccirilli Quarries"},"validFrom":"1950-01-01","validTo":"2002-03-31","current":false,"derived":true,"evidenceMineId":"1800192","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1800192|L37235|1950-01-01|M37235|1950-01-01|166492"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M39874","name":"Agostino J  Vinci"},"object":{"type":"mine","id":"1800192","name":"Patapsco Natural Stone Quarry LLC"},"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":"1800192|M39874|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L39874","name":"Vinci Stone Products, Inc"},"object":{"type":"mine","id":"1800192","name":"Patapsco Natural Stone Quarry LLC"},"validFrom":"2002-04-01","validTo":"2015-08-04","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1800192|L39874|2002-04-01|2015-08-04"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M39874","name":"Agostino J  Vinci"},"object":{"type":"operator","id":"L39874","name":"Vinci Stone Products, Inc"},"validFrom":"2002-04-01","validTo":"2015-08-04","current":false,"derived":true,"evidenceMineId":"1800192","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1800192|L39874|2002-04-01|M39874|1950-01-01|169516"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0140133","name":"VSP Holdings, LLC"},"object":{"type":"mine","id":"1800192","name":"Patapsco Natural Stone Quarry LLC"},"validFrom":"2015-08-05","validTo":"2017-12-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1800192|0140133|2015-08-05|2017-12-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M11869","name":"Francis E  Gardiner III et al"},"object":{"type":"mine","id":"1800192","name":"Patapsco Natural Stone Quarry LLC"},"validFrom":"2015-08-05","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1800192|M11869|2015-08-05|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M11869","name":"Francis E  Gardiner III et al"},"object":{"type":"operator","id":"0140133","name":"VSP Holdings, LLC"},"validFrom":"2015-08-05","validTo":"2017-12-31","current":false,"derived":true,"evidenceMineId":"1800192","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1800192|0140133|2015-08-05|M11869|2015-08-05|152632"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0156594","name":"Patapsco Natural Stone Quarry LLC"},"object":{"type":"mine","id":"1800192","name":"Patapsco Natural Stone Quarry LLC"},"validFrom":"2018-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1800192|0156594|2018-01-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0140063","name":"Kristine  Lamkin Weiffenbach"},"object":{"type":"mine","id":"1800192","name":"Patapsco Natural Stone Quarry LLC"},"validFrom":"2018-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1800192|0140063|2018-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0140063","name":"Kristine  Lamkin Weiffenbach"},"object":{"type":"operator","id":"0156594","name":"Patapsco Natural Stone Quarry LLC"},"validFrom":"2018-01-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"1800192","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"1800192|0156594|2018-01-01|0140063|2018-01-01|28374"}}],"coverage":{"historyRecords":4,"edgeCount":12,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"1800192","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"}}