{"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":"2300765","name":"Peculiar Mine"},"operator":{"type":"operator","id":"L16197","name":"Martin Marietta Materials, Inc."},"controller":{"type":"controller","id":"M00174","name":"Martin Marietta Materials Inc"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-17T05:35:58.500035+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00174","name":"Martin Marietta Materials Inc"},"object":{"type":"mine","id":"2300765","name":"Peculiar Mine"},"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":"2300765|M00174|1950-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L00780","name":"Mc Kee Quarries Company Inc"},"object":{"type":"mine","id":"2300765","name":"Peculiar Mine"},"validFrom":"1950-01-01","validTo":"1990-04-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2300765|L00780|1950-01-01|1990-04-30"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00643","name":"J M  Millett"},"object":{"type":"mine","id":"2300765","name":"Peculiar Mine"},"validFrom":"1950-01-01","validTo":"1990-04-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2300765|M00643|1950-01-01|1990-04-30"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00643","name":"J M  Millett"},"object":{"type":"operator","id":"L00780","name":"Mc Kee Quarries Company Inc"},"validFrom":"1950-01-01","validTo":"1990-04-30","current":false,"derived":true,"evidenceMineId":"2300765","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2300765|L00780|1950-01-01|M00643|1950-01-01|113704"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L00208","name":"Martin Marietta Aggregates"},"object":{"type":"mine","id":"2300765","name":"Peculiar Mine"},"validFrom":"1990-05-01","validTo":"2005-05-23","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2300765|L00208|1990-05-01|2005-05-23"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00174","name":"Martin Marietta Materials Inc"},"object":{"type":"operator","id":"L00208","name":"Martin Marietta Aggregates"},"validFrom":"1990-05-01","validTo":"2005-05-23","current":false,"derived":true,"evidenceMineId":"2300765","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2300765|L00208|1990-05-01|M00174|1950-01-01|106042"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0047911","name":"Martin Marietta Materials Inc et al"},"object":{"type":"mine","id":"2300765","name":"Peculiar Mine"},"validFrom":"2005-02-01","validTo":"2014-04-02","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2300765|0047911|2005-02-01|2014-04-02"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L16197","name":"Martin Marietta Materials, Inc."},"object":{"type":"mine","id":"2300765","name":"Peculiar Mine"},"validFrom":"2005-05-24","validTo":"2006-08-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2300765|L16197|2005-05-24|2006-08-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00174","name":"Martin Marietta Materials Inc"},"object":{"type":"operator","id":"L16197","name":"Martin Marietta Materials, Inc."},"validFrom":"2005-05-24","validTo":"2006-08-31","current":false,"derived":true,"evidenceMineId":"2300765","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2300765|L16197|2005-05-24|M00174|1950-01-01|106043"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0057618","name":"Hunt Martin Materials L.L.C."},"object":{"type":"mine","id":"2300765","name":"Peculiar Mine"},"validFrom":"2006-09-01","validTo":"2007-11-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2300765|0057618|2006-09-01|2007-11-30"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0047911","name":"Martin Marietta Materials Inc et al"},"object":{"type":"operator","id":"0057618","name":"Hunt Martin Materials L.L.C."},"validFrom":"2006-09-01","validTo":"2007-11-30","current":false,"derived":true,"evidenceMineId":"2300765","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2300765|0057618|2006-09-01|0047911|2005-02-01|5946"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0047911","name":"Hunt Midwest Enterprises et al"},"object":{"type":"operator","id":"0057618","name":"Hunt Martin Materials L.L.C."},"validFrom":"2006-09-01","validTo":"2007-11-30","current":false,"derived":true,"evidenceMineId":"2300765","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2300765|0057618|2006-09-01|0047911|2005-02-01|5947"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L16197","name":"Martin Marietta Materials, Inc."},"object":{"type":"mine","id":"2300765","name":"Peculiar Mine"},"validFrom":"2007-12-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2300765|L16197|2007-12-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00174","name":"Martin Marietta Materials Inc"},"object":{"type":"operator","id":"L16197","name":"Martin Marietta Materials, Inc."},"validFrom":"2007-12-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"2300765","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2300765|L16197|2007-12-01|M00174|1950-01-01|106044"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00174","name":"Martin Marietta Materials Inc"},"object":{"type":"mine","id":"2300765","name":"Peculiar Mine"},"validFrom":"2014-04-03","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2300765|M00174|2014-04-03|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00174","name":"Martin Marietta Materials Inc"},"object":{"type":"operator","id":"0057618","name":"Hunt Martin Materials L.L.C."},"validFrom":"2014-04-03","validTo":"2007-11-30","current":false,"derived":true,"evidenceMineId":"2300765","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"2300765|0057618|2006-09-01|M00174|2014-04-03|106497"}}],"coverage":{"historyRecords":7,"edgeCount":16,"intervalAnomalies":1,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"2300765","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"}}