{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-13T11:26:59.401Z","identity":{"mine_id":"2102954","name":"Ottertail Aggregate","status":"Abandoned","status_date":"2005-05-19","mine_type":"Surface","coal_metal":"M","commodity":"Construction Sand and Gravel","state":"MN","county":"Clay","nearest_town":"Moorhead","operator_id":"0051706","operator_name":"Aggregate Industries - NCR Inc","controller_id":"0193740","controller_name":"Amrize Ltd","district":"M4","office":"Duluth District","employees":0,"latitude":46.439344,"longitude":-95.556902},"coverage":{"contributingSources":6,"registeredSources":20,"sourceRows":49},"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":"2102954","name":"Ottertail Aggregate"},"operator":{"type":"operator","id":"0051706","name":"Aggregate Industries - NCR Inc"},"controller":{"type":"controller","id":"0193740","name":"Amrize Ltd"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L36970","name":"Ottertail Ready Mix"},"object":{"type":"mine","id":"2102954","name":"Ottertail Aggregate"},"validFrom":"1986-12-01","validTo":"1998-08-17","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2102954|L36970|1986-12-01|1998-08-17"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M36970","name":"James E  Ahlfs"},"object":{"type":"mine","id":"2102954","name":"Ottertail Aggregate"},"validFrom":"1986-12-01","validTo":"1998-08-17","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2102954|M36970|1986-12-01|1998-08-17"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M36970","name":"James E  Ahlfs"},"object":{"type":"operator","id":"L36970","name":"Ottertail Ready Mix"},"validFrom":"1986-12-01","validTo":"1998-08-17","current":false,"derived":true,"evidenceMineId":"2102954","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2102954|L36970|1986-12-01|M36970|1986-12-01|166160"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M07336","name":"Aggregate Industries PLC"},"object":{"type":"mine","id":"2102954","name":"Ottertail Aggregate"},"validFrom":"1997-05-14","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2102954|M07336|1997-05-14|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L16807","name":"CAMAS Minndak, Inc."},"object":{"type":"mine","id":"2102954","name":"Ottertail Aggregate"},"validFrom":"1998-08-18","validTo":"2002-03-06","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2102954|L16807|1998-08-18|2002-03-06"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M07336","name":"Aggregate Industries PLC"},"object":{"type":"operator","id":"L16807","name":"CAMAS Minndak, Inc."},"validFrom":"1998-08-18","validTo":"2002-03-06","current":false,"derived":true,"evidenceMineId":"2102954","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2102954|L16807|1998-08-18|M07336|1997-05-14|140899"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M07336","name":"Aggregate Industries PLC"},"object":{"type":"mine","id":"2102954","name":"Ottertail Aggregate"},"validFrom":"2001-06-01","validTo":"2009-04-29","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2102954|M07336|2001-06-01|2009-04-29"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L17298","name":"Aggregate Industries, Inc."},"object":{"type":"mine","id":"2102954","name":"Ottertail Aggregate"},"validFrom":"2002-03-07","validTo":"2003-11-25","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2102954|L17298|2002-03-07|2003-11-25"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M07336","name":"Aggregate Industries PLC"},"object":{"type":"operator","id":"L17298","name":"Aggregate Industries, Inc."},"validFrom":"2002-03-07","validTo":"2003-11-25","current":false,"derived":true,"evidenceMineId":"2102954","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2102954|L17298|2002-03-07|M07336|2001-06-01|140941"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"0051706","name":"Aggregate Industries - NCR Inc"},"object":{"type":"mine","id":"2102954","name":"Ottertail Aggregate"},"validFrom":"2003-11-26","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2102954|0051706|2003-11-26|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M07336","name":"Aggregate Industries PLC"},"object":{"type":"mine","id":"2102954","name":"Ottertail Aggregate"},"validFrom":"2003-11-26","validTo":"2009-04-29","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2102954|M07336|2003-11-26|2009-04-29"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M07336","name":"Aggregate Industries PLC"},"object":{"type":"operator","id":"0051706","name":"Aggregate Industries - NCR Inc"},"validFrom":"2003-11-26","validTo":"2009-04-29","current":false,"derived":true,"evidenceMineId":"2102954","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2102954|0051706|2003-11-26|M07336|2003-11-26|140977"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M01644","name":"Holcim Ltd"},"object":{"type":"mine","id":"2102954","name":"Ottertail Aggregate"},"validFrom":"2009-04-30","validTo":"2015-07-09","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2102954|M01644|2009-04-30|2015-07-09"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M01644","name":"Holcim Ltd"},"object":{"type":"operator","id":"L17298","name":"Aggregate Industries, Inc."},"validFrom":"2009-04-30","validTo":"2003-11-25","current":false,"derived":true,"evidenceMineId":"2102954","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2102954|L17298|2002-03-07|M01644|2009-04-30|119884"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M01644","name":"Holcim Ltd"},"object":{"type":"operator","id":"0051706","name":"Aggregate Industries - NCR Inc"},"validFrom":"2009-04-30","validTo":"2015-07-09","current":false,"derived":true,"evidenceMineId":"2102954","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2102954|0051706|2003-11-26|M01644|2009-04-30|119885"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0119681","name":"Holcim Ltd"},"object":{"type":"mine","id":"2102954","name":"Ottertail Aggregate"},"validFrom":"2015-07-10","validTo":"2025-06-22","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2102954|0119681|2015-07-10|2025-06-22"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0119681","name":"Holcim Ltd"},"object":{"type":"operator","id":"L17298","name":"Aggregate Industries, Inc."},"validFrom":"2015-07-10","validTo":"2003-11-25","current":false,"derived":true,"evidenceMineId":"2102954","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2102954|L17298|2002-03-07|0119681|2015-07-10|23023"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0119681","name":"Holcim Ltd"},"object":{"type":"operator","id":"0051706","name":"Aggregate Industries - NCR Inc"},"validFrom":"2015-07-10","validTo":"2025-06-22","current":false,"derived":true,"evidenceMineId":"2102954","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2102954|0051706|2003-11-26|0119681|2015-07-10|23024"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0193740","name":"Amrize Ltd"},"object":{"type":"mine","id":"2102954","name":"Ottertail Aggregate"},"validFrom":"2025-06-23","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2102954|0193740|2025-06-23|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0193740","name":"Amrize Ltd"},"object":{"type":"operator","id":"L17298","name":"Aggregate Industries, Inc."},"validFrom":"2025-06-23","validTo":"2003-11-25","current":false,"derived":true,"evidenceMineId":"2102954","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2102954|L17298|2002-03-07|0193740|2025-06-23|41312"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0193740","name":"Amrize Ltd"},"object":{"type":"operator","id":"0051706","name":"Aggregate Industries - NCR Inc"},"validFrom":"2025-06-23","validTo":null,"current":true,"derived":true,"evidenceMineId":"2102954","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2102954|0051706|2003-11-26|0193740|2025-06-23|41313"}}],"coverage":{"historyRecords":10,"edgeCount":21,"intervalAnomalies":3,"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":"2005-05-19","lastDate":"2005-05-19","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":10,"firstDate":"1986-12-01","lastDate":"2003-11-26","metrics":{"recentRows":0,"currentOperatorTenures":4,"completedOperatorTenures":6},"periods":{},"recentRecords":[]},{"id":"msha-inspections","name":"Inspections","domains":["safety","compliance"],"products":["inspection mix","on-site hours","event context","citation rate denominator"],"rowCount":1,"firstDate":"2000-06-13","lastDate":"2000-06-13","metrics":{"inspectors":1,"recentRows":0,"onSiteHours":3,"inspectionHours":6,"inspectionSamples":0},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"511599","EVENT_NO":"0715473","INSPECTION_BEGIN_DT":"06/13/2000","INSPECTION_END_DT":"06/13/2000","ACTIVITY_CODE":"01","ACTIVITY":"REGULAR INSPECTION","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"6","SUM_TOTAL_ON_SITE_HOURS":"3","sourceDate":"2000-06-13"}]},{"id":"msha-mine-production-quarterly","name":"Mine Employment and Production — Quarterly","domains":["production","safety","compliance"],"products":["production trend","employee hours","rate denominators","seasonality"],"rowCount":34,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2005-Q2":{"hours":0,"employees":0,"production":0},"2005-Q1":{"hours":0,"employees":0,"production":0},"2004-Q4":{"hours":0,"employees":0,"production":0},"2004-Q3":{"hours":0,"employees":0,"production":0},"2004-Q2":{"hours":0,"employees":0,"production":0},"2004-Q1":{"hours":0,"employees":0,"production":0},"2003-Q4":{"hours":0,"employees":0,"production":0},"2003-Q3":{"hours":0,"employees":0,"production":0},"2003-Q2":{"hours":0,"employees":0,"production":0},"2003-Q1":{"hours":0,"employees":0,"production":0},"2002-Q4":{"hours":0,"employees":0,"production":0},"2002-Q3":{"hours":0,"employees":0,"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":2,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2000":{"hours":1923,"employees":4,"production":0},"2001":{"hours":192,"employees":3,"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/2102954/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/2102954/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":"2102954","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804}}