{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-18T09:31:49.615Z","identity":{"mine_id":"4300837","name":"Astec GT205 Screening Plant","status":"Temporarily Idled","status_date":"2026-01-28","mine_type":"Surface","coal_metal":"M","commodity":"Construction Sand and Gravel","state":"VT","county":"Washington","nearest_town":"Marshfield","operator_id":"0050009","operator_name":"J. A. McDonald, Inc.","controller_id":"0107643","controller_name":"Eric C  Boyden","district":"M2","office":"Portsmouth NH Field Office","employees":0,"latitude":44.261667,"longitude":-72.615556},"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":"2026-10-18T09:31:49.615908+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":"4300837","name":"Astec GT205 Screening Plant"},"operator":{"type":"operator","id":"0050009","name":"J. A. McDonald, Inc."},"controller":{"type":"controller","id":"0107643","name":"Eric C  Boyden"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-18T09:31:49.615908+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"0040463","name":"James A  McDonald"},"object":{"type":"mine","id":"4300837","name":"Astec GT205 Screening Plant"},"validFrom":"2001-11-06","validTo":"2012-12-31","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"4300837|0040463|2001-11-06|2012-12-31"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0107643","name":"Eric C  Boyden"},"object":{"type":"mine","id":"4300837","name":"Astec GT205 Screening Plant"},"validFrom":"2013-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"4300837|0107643|2013-01-01|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0050009","name":"J. A. McDonald, Inc."},"object":{"type":"mine","id":"4300837","name":"Astec GT205 Screening Plant"},"validFrom":"2026-01-27","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"4300837|0050009|2026-01-27|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0040463","name":"James A  McDonald"},"object":{"type":"operator","id":"0050009","name":"J. A. McDonald, Inc."},"validFrom":"2026-01-27","validTo":"2012-12-31","current":false,"derived":true,"evidenceMineId":"4300837","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"4300837|0050009|2026-01-27|0040463|2001-11-06|12"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0107643","name":"Eric C  Boyden"},"object":{"type":"operator","id":"0050009","name":"J. A. McDonald, Inc."},"validFrom":"2026-01-27","validTo":null,"current":true,"derived":true,"evidenceMineId":"4300837","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-18T09:31:49.615908+00:00","recordKey":"4300837|0050009|2026-01-27|0107643|2013-01-01|19290"}}],"coverage":{"historyRecords":2,"edgeCount":5,"intervalAnomalies":1,"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":"2026-01-28","lastDate":"2026-01-28","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":2,"firstDate":"2026-01-27","lastDate":"2026-01-27","metrics":{"recentRows":2,"currentOperatorTenures":2,"completedOperatorTenures":0},"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":2,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2026-Q2":{"hours":1,"employees":1,"production":0},"2026-Q1":{"hours":1,"employees":1,"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":{"2026":{"hours":2,"employees":1,"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/4300837/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/4300837/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":"4300837","dataSource":"postgres","snapshotId":"2026-10-18T09:31:49.615908+00:00","completedAt":"2026-10-18T09:31:49.615Z","sourceCount":20,"totalRows":17915666}}