{"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":"3800020","name":"KERSHAW PINK"},"operator":{"type":"operator","id":"0198133","name":"Georgia Stone Management LLC"},"controller":{"type":"controller","id":"0187481","name":"Donald  Conte"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L03148","name":"Matthews International Corp"},"object":{"type":"mine","id":"3800020","name":"KERSHAW PINK"},"validFrom":"1950-01-01","validTo":"1992-05-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3800020|L03148|1950-01-01|1992-05-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M02536","name":"Thomas F  Purner"},"object":{"type":"mine","id":"3800020","name":"KERSHAW PINK"},"validFrom":"1950-01-01","validTo":"1992-05-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3800020|M02536|1950-01-01|1992-05-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M02536","name":"Thomas F  Purner"},"object":{"type":"operator","id":"L03148","name":"Matthews International Corp"},"validFrom":"1950-01-01","validTo":"1992-05-31","current":false,"derived":true,"evidenceMineId":"3800020","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3800020|L03148|1950-01-01|M02536|1950-01-01|125925"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M01606","name":"George T  Oglesby"},"object":{"type":"mine","id":"3800020","name":"KERSHAW PINK"},"validFrom":"1992-05-22","validTo":"1997-10-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3800020|M01606|1992-05-22|1997-10-31"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L12744","name":"Carolina Quarries Inc"},"object":{"type":"mine","id":"3800020","name":"KERSHAW PINK"},"validFrom":"1992-06-01","validTo":"1997-10-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3800020|L12744|1992-06-01|1997-10-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M01606","name":"George T  Oglesby"},"object":{"type":"operator","id":"L12744","name":"Carolina Quarries Inc"},"validFrom":"1992-06-01","validTo":"1997-10-31","current":false,"derived":true,"evidenceMineId":"3800020","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3800020|L12744|1992-06-01|M01606|1992-05-22|119632"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M08009","name":"Antonio C  Ramos"},"object":{"type":"mine","id":"3800020","name":"KERSHAW PINK"},"validFrom":"1997-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3800020|M08009|1997-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L15617","name":"Carolina Quarries Inc"},"object":{"type":"mine","id":"3800020","name":"KERSHAW PINK"},"validFrom":"1997-11-01","validTo":"2007-05-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3800020|L15617|1997-11-01|2007-05-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M01725","name":"Kurt M  Swenson"},"object":{"type":"mine","id":"3800020","name":"KERSHAW PINK"},"validFrom":"1997-11-01","validTo":"2016-09-20","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3800020|M01725|1997-11-01|2016-09-20"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M01725","name":"Kurt M  Swenson"},"object":{"type":"operator","id":"L15617","name":"Carolina Quarries Inc"},"validFrom":"1997-11-01","validTo":"2007-05-31","current":false,"derived":true,"evidenceMineId":"3800020","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3800020|L15617|1997-11-01|M01725|1997-11-01|120652"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L15437","name":"Georgia Stone Industries, Inc."},"object":{"type":"mine","id":"3800020","name":"KERSHAW PINK"},"validFrom":"2007-06-01","validTo":"2024-09-09","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3800020|L15437|2007-06-01|2024-09-09"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M08009","name":"Antonio C  Ramos"},"object":{"type":"operator","id":"L15437","name":"Georgia Stone Industries, Inc."},"validFrom":"2007-06-01","validTo":"2024-09-09","current":false,"derived":true,"evidenceMineId":"3800020","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3800020|L15437|2007-06-01|M08009|1997-01-01|142579"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M12431","name":"Polycor Inc"},"object":{"type":"mine","id":"3800020","name":"KERSHAW PINK"},"validFrom":"2016-09-21","validTo":"2023-02-15","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3800020|M12431|2016-09-21|2023-02-15"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M12431","name":"Polycor Inc"},"object":{"type":"operator","id":"L15617","name":"Carolina Quarries Inc"},"validFrom":"2016-09-21","validTo":"2007-05-31","current":false,"derived":true,"evidenceMineId":"3800020","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3800020|L15617|1997-11-01|M12431|2016-09-21|153732"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0174622","name":"TorQuest Partners Inc"},"object":{"type":"mine","id":"3800020","name":"KERSHAW PINK"},"validFrom":"2023-02-16","validTo":"2023-08-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3800020|0174622|2023-02-16|2023-08-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0174622","name":"TorQuest Partners Inc"},"object":{"type":"operator","id":"L15617","name":"Carolina Quarries Inc"},"validFrom":"2023-02-16","validTo":"2007-05-31","current":false,"derived":true,"evidenceMineId":"3800020","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3800020|L15617|1997-11-01|0174622|2023-02-16|37151"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M12431","name":"Polycor Inc"},"object":{"type":"mine","id":"3800020","name":"KERSHAW PINK"},"validFrom":"2023-09-01","validTo":"2026-01-27","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3800020|M12431|2023-09-01|2026-01-27"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M12431","name":"Polycor Inc"},"object":{"type":"operator","id":"L15617","name":"Carolina Quarries Inc"},"validFrom":"2023-09-01","validTo":"2007-05-31","current":false,"derived":true,"evidenceMineId":"3800020","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3800020|L15617|1997-11-01|M12431|2023-09-01|153759"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0198133","name":"Georgia Stone Management LLC"},"object":{"type":"mine","id":"3800020","name":"KERSHAW PINK"},"validFrom":"2024-09-10","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3800020|0198133|2024-09-10|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0187481","name":"Donald  Conte"},"object":{"type":"mine","id":"3800020","name":"KERSHAW PINK"},"validFrom":"2024-09-10","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3800020|0187481|2024-09-10|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0187481","name":"Donald  Conte"},"object":{"type":"operator","id":"0198133","name":"Georgia Stone Management LLC"},"validFrom":"2024-09-10","validTo":null,"current":true,"derived":true,"evidenceMineId":"3800020","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3800020|0198133|2024-09-10|0187481|2024-09-10|39946"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00174","name":"Martin Marietta Materials Inc"},"object":{"type":"mine","id":"3800020","name":"KERSHAW PINK"},"validFrom":"2026-01-28","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3800020|M00174|2026-01-28|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00174","name":"Martin Marietta Materials Inc"},"object":{"type":"operator","id":"L15617","name":"Carolina Quarries Inc"},"validFrom":"2026-01-28","validTo":"2007-05-31","current":false,"derived":true,"evidenceMineId":"3800020","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"3800020|L15617|1997-11-01|M00174|2026-01-28|106741"}}],"coverage":{"historyRecords":9,"edgeCount":23,"intervalAnomalies":4,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"3800020","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"}}