{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-13T11:26:59.401Z","identity":{"mine_id":"1800302","name":"White Marsh Plant","status":"Abandoned","status_date":"1993-10-13","mine_type":"Surface","coal_metal":"M","commodity":"Construction Sand and Gravel","state":"MD","county":"Baltimore","nearest_town":"?","operator_id":"L09104","operator_name":"Genstar Stone Products Company","controller_id":"M00190","controller_name":"Redland Plc","district":"M2","office":"Kutztown PA Field Office","employees":0,"latitude":null,"longitude":null},"coverage":{"contributingSources":3,"registeredSources":20,"sourceRows":5},"relationships":{"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":"2026-10-13T11:19:05.459773+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":"1800302","name":"White Marsh Plant"},"operator":{"type":"operator","id":"L09104","name":"Genstar Stone Products Company"},"controller":{"type":"controller","id":"M00190","name":"Redland Plc"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L03076","name":"Flintkote Stone Products Company"},"object":{"type":"mine","id":"1800302","name":"White Marsh Plant"},"validFrom":"1950-01-01","validTo":"1980-04-06","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1800302|L03076|1950-01-01|1980-04-06"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00345","name":"Flintkote Company"},"object":{"type":"mine","id":"1800302","name":"White Marsh Plant"},"validFrom":"1950-01-01","validTo":"1980-04-06","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1800302|M00345|1950-01-01|1980-04-06"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00345","name":"Flintkote Company"},"object":{"type":"operator","id":"L03076","name":"Flintkote Stone Products Company"},"validFrom":"1950-01-01","validTo":"1980-04-06","current":false,"derived":true,"evidenceMineId":"1800302","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1800302|L03076|1950-01-01|M00345|1950-01-01|109727"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M03174","name":"Cimenteries Cbr Cementbedrijven"},"object":{"type":"mine","id":"1800302","name":"White Marsh Plant"},"validFrom":"1980-03-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1800302|M03174|1980-03-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L05220","name":"Genstar Stone Products Company"},"object":{"type":"mine","id":"1800302","name":"White Marsh Plant"},"validFrom":"1980-04-07","validTo":"1986-11-03","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1800302|L05220|1980-04-07|1986-11-03"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M03174","name":"Cimenteries Cbr Cementbedrijven"},"object":{"type":"operator","id":"L05220","name":"Genstar Stone Products Company"},"validFrom":"1980-04-07","validTo":"1986-11-03","current":false,"derived":true,"evidenceMineId":"1800302","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1800302|L05220|1980-04-07|M03174|1980-03-01|128101"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L09104","name":"Genstar Stone Products Company"},"object":{"type":"mine","id":"1800302","name":"White Marsh Plant"},"validFrom":"1986-11-04","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1800302|L09104|1986-11-04|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00190","name":"Redland Plc"},"object":{"type":"mine","id":"1800302","name":"White Marsh Plant"},"validFrom":"1986-11-04","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1800302|M00190|1986-11-04|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00190","name":"Redland Plc"},"object":{"type":"operator","id":"L09104","name":"Genstar Stone Products Company"},"validFrom":"1986-11-04","validTo":null,"current":true,"derived":true,"evidenceMineId":"1800302","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1800302|L09104|1986-11-04|M00190|1986-11-04|107055"}}],"coverage":{"historyRecords":3,"edgeCount":9,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"sources":[{"id":"msha-addresses","name":"Addresses of Record","domains":["identity","logistics"],"products":["entity resolution","address history","facility geocoding"],"rowCount":1,"firstDate":"1993-10-13","lastDate":"1993-10-13","metrics":{},"periods":{},"recentRecords":[]},{"id":"msha-controller-operator-history","name":"Controller and Operator History","domains":["identity","compliance"],"products":["historical ownership attribution","operator transitions","valid-time joins"],"rowCount":3,"firstDate":"1950-01-01","lastDate":"1986-11-04","metrics":{"recentRows":0,"currentOperatorTenures":1,"completedOperatorTenures":2},"periods":{},"recentRecords":[]},{"id":"msha-mines","name":"Mines","domains":["identity","production","logistics"],"products":["mine identity","status","commodity","location","operator and controller"],"rowCount":1,"firstDate":null,"lastDate":null,"metrics":{},"periods":{},"recentRecords":[]}],"safety":{"href":"/api/v1/mines/1800302/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/1800302/silica","description":"Dedicated silica records, measurements, sample status and trends. Defaults to the snapshot year; use year=all for history."},"externalContext":{"eia":null,"title30":{"snapshot":{"chapterCount":6,"featuredSectionCount":100,"latestAmendedOn":"2026-08-14","latestIssueDate":"2026-08-14","partCount":206,"sectionCount":5954,"upToDateAsOf":"2026-08-19"},"regulations":[],"fullCorpus":"/data/title30-sections.json"}}},"meta":{"representation":"json","mineId":"1800302","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804}}