{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-13T11:26:59.401Z","identity":{"mine_id":"2602838","name":"Portable 4","status":"Abandoned","status_date":"2019-10-01","mine_type":"Surface","coal_metal":"M","commodity":"Construction Sand and Gravel","state":"NV","county":"Clark","nearest_town":"Las Vegas","operator_id":"L06525","operator_name":"Aggregate Industries SWR, Inc","controller_id":"0193740","controller_name":"Amrize Ltd","district":"M7","office":"Henderson NV Field Office","employees":0,"latitude":null,"longitude":null},"coverage":{"contributingSources":8,"registeredSources":20,"sourceRows":15},"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":"2602838","name":"Portable 4"},"operator":{"type":"operator","id":"L06525","name":"Aggregate Industries SWR, Inc"},"controller":{"type":"controller","id":"0193740","name":"Amrize Ltd"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M05190","name":"Garth  Frehner"},"object":{"type":"mine","id":"2602838","name":"Portable 4"},"validFrom":"1983-08-01","validTo":"2004-05-09","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2602838|M05190|1983-08-01|2004-05-09"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M07336","name":"Aggregate Industries PLC"},"object":{"type":"mine","id":"2602838","name":"Portable 4"},"validFrom":"2004-05-10","validTo":"2009-04-29","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2602838|M07336|2004-05-10|2009-04-29"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M01644","name":"Holcim Ltd"},"object":{"type":"mine","id":"2602838","name":"Portable 4"},"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":"2602838|M01644|2009-04-30|2015-07-09"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0119681","name":"Holcim Ltd"},"object":{"type":"mine","id":"2602838","name":"Portable 4"},"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":"2602838|0119681|2015-07-10|2025-06-22"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L06525","name":"Aggregate Industries SWR, Inc"},"object":{"type":"mine","id":"2602838","name":"Portable 4"},"validFrom":"2018-12-26","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2602838|L06525|2018-12-26|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0119681","name":"Holcim Ltd"},"object":{"type":"operator","id":"L06525","name":"Aggregate Industries SWR, Inc"},"validFrom":"2018-12-26","validTo":"2025-06-22","current":false,"derived":true,"evidenceMineId":"2602838","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2602838|L06525|2018-12-26|0119681|2015-07-10|23087"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M01644","name":"Holcim Ltd"},"object":{"type":"operator","id":"L06525","name":"Aggregate Industries SWR, Inc"},"validFrom":"2018-12-26","validTo":"2015-07-09","current":false,"derived":true,"evidenceMineId":"2602838","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2602838|L06525|2018-12-26|M01644|2009-04-30|119931"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M05190","name":"Garth  Frehner"},"object":{"type":"operator","id":"L06525","name":"Aggregate Industries SWR, Inc"},"validFrom":"2018-12-26","validTo":"2004-05-09","current":false,"derived":true,"evidenceMineId":"2602838","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2602838|L06525|2018-12-26|M05190|1983-08-01|133910"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M07336","name":"Aggregate Industries PLC"},"object":{"type":"operator","id":"L06525","name":"Aggregate Industries SWR, Inc"},"validFrom":"2018-12-26","validTo":"2009-04-29","current":false,"derived":true,"evidenceMineId":"2602838","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2602838|L06525|2018-12-26|M07336|2004-05-10|141031"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0193740","name":"Amrize Ltd"},"object":{"type":"mine","id":"2602838","name":"Portable 4"},"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":"2602838|0193740|2025-06-23|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0193740","name":"Amrize Ltd"},"object":{"type":"operator","id":"L06525","name":"Aggregate Industries SWR, Inc"},"validFrom":"2025-06-23","validTo":null,"current":true,"derived":true,"evidenceMineId":"2602838","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"2602838|L06525|2018-12-26|0193740|2025-06-23|41376"}}],"coverage":{"historyRecords":5,"edgeCount":11,"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":"2019-10-01","lastDate":"2019-10-01","metrics":{},"periods":{},"recentRecords":[]},{"id":"msha-assessed-violations","name":"Assessed Violations","domains":["compliance","legal"],"products":["penalty lifecycle","paid and outstanding amounts","assessment aging"],"rowCount":1,"firstDate":"2019-07-01","lastDate":"2019-07-01","metrics":{"ss":0,"delinquent":1,"recentRows":0,"paidPenalty":121,"proposedPenalty":121,"currentAssessment":121},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"2575702","VIOLATION_NO":"9430418","ISSUE_DT":"07/01/2019","CFR_STANDARD_CD":"56.1000","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"121.00","CURRENT_ASSESSMENT_AMT":"121.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2019-07-01"}]},{"id":"msha-controller-operator-history","name":"Controller and Operator History","domains":["identity","compliance"],"products":["historical ownership attribution","operator transitions","valid-time joins"],"rowCount":5,"firstDate":"2018-12-26","lastDate":"2018-12-26","metrics":{"recentRows":0,"currentOperatorTenures":5,"completedOperatorTenures":0},"periods":{},"recentRecords":[]},{"id":"msha-inspections","name":"Inspections","domains":["safety","compliance"],"products":["inspection mix","on-site hours","event context","citation rate denominator"],"rowCount":1,"firstDate":"2019-07-01","lastDate":"2019-07-01","metrics":{"inspectors":1,"recentRows":0,"onSiteHours":0.5,"inspectionHours":3.25,"inspectionSamples":0},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"831659","EVENT_NO":"6826545","INSPECTION_BEGIN_DT":"07/01/2019","INSPECTION_END_DT":"07/01/2019","ACTIVITY_CODE":"E28","ACTIVITY":"Mine Idle Activity","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"3.25","SUM_TOTAL_ON_SITE_HOURS":".5","sourceDate":"2019-07-01"}]},{"id":"msha-mine-production-quarterly","name":"Mine Employment and Production — Quarterly","domains":["production","safety","compliance"],"products":["production trend","employee hours","rate denominators","seasonality"],"rowCount":3,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2019-Q2":{"hours":1510,"employees":4,"production":0},"2019-Q1":{"hours":1738,"employees":3,"production":0},"2018-Q4":{"hours":49,"employees":3,"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":{"2018":{"hours":49,"employees":3,"production":0},"2019":{"hours":3248,"employees":4,"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":[]},{"id":"msha-violations","name":"Violations","domains":["compliance","safety","legal"],"products":["citation and order record","condition text","Title 30 linkage","abatement patterns"],"rowCount":1,"firstDate":"2019-07-01","lastDate":"2019-07-01","metrics":{"ss":0,"amountDue":121,"contested":0,"amountPaid":121,"recentRows":0,"section104d":0,"unterminated":0,"proposedPenalty":121},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"1566611","VIOLATION_NO":"9430418","VIOLATION_ISSUE_DT":"07/01/2019","SIG_SUB":"N","PART_SECTION":"56.1000","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"NoLikelihood","INJ_ILLNESS":"NoLostDays","NO_AFFECTED":"0","NEGLIGENCE":"HighNegligence","TERMINATION_DT":"07/01/2019","PROPOSED_PENALTY":"121","AMOUNT_DUE":"121","AMOUNT_PAID":"121","CONTESTED_IND":"N","sourceDate":"2019-07-01"}]}],"safety":{"href":"/api/v1/mines/2602838/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/2602838/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":[{"chapter":"I","heading":"Notification of commencement of operations and closing of mines.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-A/section-56.1000","part":"56","subchapter":"K","subpart":"A","id":"56.1000","citation":"30 CFR 56.1000","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","subchapterHeading":"SUBCHAPTER K—METAL AND NONMETAL MINE SAFETY AND HEALTH","partHeading":"PART 56—SAFETY AND HEALTH STANDARDS—SURFACE METAL AND NONMETAL MINES","subpartHeading":"","text":null,"occurrenceCount":1}],"fullCorpus":"/data/title30-sections.json"}}},"meta":{"representation":"json","mineId":"2602838","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804}}