{"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":"0900460","name":"Cumming Mine Site"},"operator":{"type":"operator","id":"0113025","name":"Bluegrass Materials Company, LLC"},"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":"M00076","name":"Jim Walter Corp"},"object":{"type":"mine","id":"0900460","name":"Cumming Mine Site"},"validFrom":"1950-01-01","validTo":"1989-05-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0900460|M00076|1950-01-01|1989-05-30"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L01615","name":"Hall Aggregate Company"},"object":{"type":"mine","id":"0900460","name":"Cumming Mine Site"},"validFrom":"1950-01-01","validTo":"1979-12-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0900460|L01615|1950-01-01|1979-12-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M01447","name":"Roger H  Brown"},"object":{"type":"mine","id":"0900460","name":"Cumming Mine Site"},"validFrom":"1950-01-01","validTo":"1979-12-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0900460|M01447|1950-01-01|1979-12-31"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M01447","name":"Roger H  Brown"},"object":{"type":"operator","id":"L01615","name":"Hall Aggregate Company"},"validFrom":"1950-01-01","validTo":"1979-12-31","current":false,"derived":true,"evidenceMineId":"0900460","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0900460|L01615|1950-01-01|M01447|1950-01-01|118714"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L00036","name":"Georgia Marble Company"},"object":{"type":"mine","id":"0900460","name":"Cumming Mine Site"},"validFrom":"1980-01-01","validTo":"1989-05-30","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0900460|L00036|1980-01-01|1989-05-30"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00076","name":"Jim Walter Corp"},"object":{"type":"operator","id":"L00036","name":"Georgia Marble Company"},"validFrom":"1980-01-01","validTo":"1989-05-30","current":false,"derived":true,"evidenceMineId":"0900460","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0900460|L00036|1980-01-01|M00076|1950-01-01|103533"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M05332","name":"Blue Circle Industries Plc"},"object":{"type":"mine","id":"0900460","name":"Cumming Mine Site"},"validFrom":"1987-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0900460|M05332|1987-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L10961","name":"Georgia Marble Aggregates Corp"},"object":{"type":"mine","id":"0900460","name":"Cumming Mine Site"},"validFrom":"1989-05-31","validTo":"1989-09-13","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0900460|L10961|1989-05-31|1989-09-13"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M11763","name":"Imerys S A"},"object":{"type":"mine","id":"0900460","name":"Cumming Mine Site"},"validFrom":"1989-05-31","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0900460|M11763|1989-05-31|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M11763","name":"Imerys S A"},"object":{"type":"operator","id":"L10961","name":"Georgia Marble Aggregates Corp"},"validFrom":"1989-05-31","validTo":"1989-09-13","current":false,"derived":true,"evidenceMineId":"0900460","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0900460|L10961|1989-05-31|M11763|1989-05-31|152262"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L11161","name":"Blue Circle Aggregates Inc"},"object":{"type":"mine","id":"0900460","name":"Cumming Mine Site"},"validFrom":"1989-09-14","validTo":"2001-07-11","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0900460|L11161|1989-09-14|2001-07-11"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M05332","name":"Blue Circle Industries Plc"},"object":{"type":"operator","id":"L11161","name":"Blue Circle Aggregates Inc"},"validFrom":"1989-09-14","validTo":"2001-07-11","current":false,"derived":true,"evidenceMineId":"0900460","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0900460|L11161|1989-09-14|M05332|1987-01-01|134334"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M02063","name":"Lafarge S A"},"object":{"type":"mine","id":"0900460","name":"Cumming Mine Site"},"validFrom":"2001-07-12","validTo":"2015-07-09","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0900460|M02063|2001-07-12|2015-07-09"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0050826","name":"Lafarge Aggregates Southeast"},"object":{"type":"mine","id":"0900460","name":"Cumming Mine Site"},"validFrom":"2001-07-12","validTo":"2010-12-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0900460|0050826|2001-07-12|2010-12-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M02063","name":"Lafarge S A"},"object":{"type":"mine","id":"0900460","name":"Cumming Mine Site"},"validFrom":"2001-07-12","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0900460|M02063|2001-07-12|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M02063","name":"Lafarge S A"},"object":{"type":"operator","id":"0050826","name":"Lafarge Aggregates Southeast"},"validFrom":"2001-07-12","validTo":"2010-12-31","current":false,"derived":true,"evidenceMineId":"0900460","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0900460|0050826|2001-07-12|M02063|2001-07-12|123497"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0095673","name":"Panadero Aggregates Holdings, LLC"},"object":{"type":"mine","id":"0900460","name":"Cumming Mine Site"},"validFrom":"2010-08-26","validTo":"2018-04-26","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0900460|0095673|2010-08-26|2018-04-26"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0050815","name":"Lafarge Building Materials, Inc."},"object":{"type":"mine","id":"0900460","name":"Cumming Mine Site"},"validFrom":"2011-01-01","validTo":"2013-03-28","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0900460|0050815|2011-01-01|2013-03-28"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M02063","name":"Lafarge S A"},"object":{"type":"operator","id":"0050815","name":"Lafarge Building Materials, Inc."},"validFrom":"2011-01-01","validTo":"2013-03-28","current":false,"derived":true,"evidenceMineId":"0900460","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0900460|0050815|2011-01-01|M02063|2001-07-12|123441"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0113025","name":"Bluegrass Materials Company, LLC"},"object":{"type":"mine","id":"0900460","name":"Cumming Mine Site"},"validFrom":"2013-03-29","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0900460|0113025|2013-03-29|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0095673","name":"Panadero Aggregates Holdings, LLC"},"object":{"type":"operator","id":"0113025","name":"Bluegrass Materials Company, LLC"},"validFrom":"2013-03-29","validTo":"2018-04-26","current":false,"derived":true,"evidenceMineId":"0900460","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0900460|0113025|2013-03-29|0095673|2010-08-26|15754"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0119681","name":"Holcim Ltd"},"object":{"type":"mine","id":"0900460","name":"Cumming Mine Site"},"validFrom":"2015-07-10","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0900460|0119681|2015-07-10|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0119681","name":"Holcim Ltd"},"object":{"type":"operator","id":"0050815","name":"Lafarge Building Materials, Inc."},"validFrom":"2015-07-10","validTo":"2013-03-28","current":false,"derived":true,"evidenceMineId":"0900460","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0900460|0050815|2011-01-01|0119681|2015-07-10|23208"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00174","name":"Martin Marietta Materials Inc"},"object":{"type":"mine","id":"0900460","name":"Cumming Mine Site"},"validFrom":"2018-04-27","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0900460|M00174|2018-04-27|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00174","name":"Martin Marietta Materials Inc"},"object":{"type":"operator","id":"0113025","name":"Bluegrass Materials Company, LLC"},"validFrom":"2018-04-27","validTo":null,"current":true,"derived":true,"evidenceMineId":"0900460","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-17T05:35:58.500035+00:00","recordKey":"0900460|0113025|2013-03-29|M00174|2018-04-27|106541"}}],"coverage":{"historyRecords":9,"edgeCount":25,"intervalAnomalies":1,"sourceDatasetId":"msha-controller-operator-history"}},"meta":{"mineId":"0900460","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"}}