{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-13T11:26:59.401Z","identity":{"mine_id":"3607748","name":"CHAPMANVILLE PORTABLE","status":"Abandoned","status_date":"1999-05-19","mine_type":"Facility","coal_metal":"M","commodity":"Construction Sand and Gravel","state":"PA","county":"Venango","nearest_town":"","operator_id":"L06066","operator_name":"I A Construction Corp","controller_id":"0199361","controller_name":"Fairchild Brothers Holding Company","district":"M2","office":"Warrendale PA Field Office","employees":0,"latitude":null,"longitude":null},"coverage":{"contributingSources":5,"registeredSources":20,"sourceRows":7},"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":"3607748","name":"CHAPMANVILLE PORTABLE"},"operator":{"type":"operator","id":"L06066","name":"I A Construction Corp"},"controller":{"type":"controller","id":"0199361","name":"Fairchild Brothers Holding Company"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M03183","name":"Colas S A"},"object":{"type":"mine","id":"3607748","name":"CHAPMANVILLE PORTABLE"},"validFrom":"1950-01-01","validTo":"2026-02-19","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3607748|M03183|1950-01-01|2026-02-19"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M02967","name":"Wood Richard L & Richard A"},"object":{"type":"mine","id":"3607748","name":"CHAPMANVILLE PORTABLE"},"validFrom":"1979-11-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3607748|M02967|1979-11-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L03701","name":"Wood Gravel Company"},"object":{"type":"mine","id":"3607748","name":"CHAPMANVILLE PORTABLE"},"validFrom":"1985-10-01","validTo":"1996-09-02","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3607748|L03701|1985-10-01|1996-09-02"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M02967","name":"Wood Richard L & Richard A"},"object":{"type":"operator","id":"L03701","name":"Wood Gravel Company"},"validFrom":"1985-10-01","validTo":"1996-09-02","current":false,"derived":true,"evidenceMineId":"3607748","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3607748|L03701|1985-10-01|M02967|1979-11-01|127522"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L06066","name":"I A Construction Corp"},"object":{"type":"mine","id":"3607748","name":"CHAPMANVILLE PORTABLE"},"validFrom":"1996-09-03","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3607748|L06066|1996-09-03|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M03183","name":"Colas S A"},"object":{"type":"operator","id":"L06066","name":"I A Construction Corp"},"validFrom":"1996-09-03","validTo":"2026-02-19","current":false,"derived":true,"evidenceMineId":"3607748","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3607748|L06066|1996-09-03|M03183|1950-01-01|128246"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0199361","name":"Fairchild Brothers Holding Company"},"object":{"type":"mine","id":"3607748","name":"CHAPMANVILLE PORTABLE"},"validFrom":"2026-02-20","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3607748|0199361|2026-02-20|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0199361","name":"Fairchild Brothers Holding Company"},"object":{"type":"operator","id":"L06066","name":"I A Construction Corp"},"validFrom":"2026-02-20","validTo":null,"current":true,"derived":true,"evidenceMineId":"3607748","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3607748|L06066|1996-09-03|0199361|2026-02-20|42459"}}],"coverage":{"historyRecords":3,"edgeCount":8,"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":"1999-05-19","lastDate":"1999-05-19","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":"1985-10-01","lastDate":"1996-09-03","metrics":{"recentRows":0,"currentOperatorTenures":2,"completedOperatorTenures":1},"periods":{},"recentRecords":[]},{"id":"msha-mine-production-quarterly","name":"Mine Employment and Production — Quarterly","domains":["production","safety","compliance"],"products":["production trend","employee hours","rate denominators","seasonality"],"rowCount":1,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2000-Q1":{"hours":33,"employees":2,"production":0}},"recentRecords":[]},{"id":"msha-mine-production-yearly","name":"Mine Employment and Production — Yearly","domains":["production","safety","compliance"],"products":["annual trend","backfill","quarterly reconciliation"],"rowCount":1,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2000":{"hours":33,"employees":2,"production":0}},"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/3607748/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/3607748/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":"3607748","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804}}