{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-13T11:26:59.401Z","identity":{"mine_id":"0600812","name":"POWERSCREEN CHIEFTAIN 88.574023","status":"Intermittent","status_date":"2023-06-05","mine_type":"Surface","coal_metal":"M","commodity":"Crushed, Broken Stone NEC","state":"CT","county":"Hartford","nearest_town":"New Britain","operator_id":"L15563","operator_name":"Tilcon Connecticut Inc","controller_id":"M06183","controller_name":"CRH PLC","district":"M2","office":"Albany NY Field Office","employees":1,"latitude":41.3325,"longitude":-72.793056},"coverage":{"contributingSources":8,"registeredSources":20,"sourceRows":47},"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":"0600812","name":"POWERSCREEN CHIEFTAIN 88.574023"},"operator":{"type":"operator","id":"L15563","name":"Tilcon Connecticut Inc"},"controller":{"type":"controller","id":"M06183","name":"CRH PLC"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"M06183","name":"CRH PLC"},"object":{"type":"mine","id":"0600812","name":"POWERSCREEN CHIEFTAIN 88.574023"},"validFrom":"1996-09-09","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0600812|M06183|1996-09-09|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L15563","name":"Tilcon Connecticut Inc"},"object":{"type":"mine","id":"0600812","name":"POWERSCREEN CHIEFTAIN 88.574023"},"validFrom":"2018-11-30","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0600812|L15563|2018-11-30|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M06183","name":"CRH PLC"},"object":{"type":"operator","id":"L15563","name":"Tilcon Connecticut Inc"},"validFrom":"2018-11-30","validTo":null,"current":true,"derived":true,"evidenceMineId":"0600812","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"0600812|L15563|2018-11-30|M06183|1996-09-09|136678"}}],"coverage":{"historyRecords":1,"edgeCount":3,"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":"2023-06-05","lastDate":"2023-06-05","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":"2025-02-26","lastDate":"2025-02-26","metrics":{"ss":0,"delinquent":1,"recentRows":1,"paidPenalty":151,"proposedPenalty":151,"currentAssessment":151},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"2951526","VIOLATION_NO":"9808250","ISSUE_DT":"02/26/2025","CFR_STANDARD_CD":"50.30(a)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"151.00","CURRENT_ASSESSMENT_AMT":"151.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2025-02-26"}]},{"id":"msha-controller-operator-history","name":"Controller and Operator History","domains":["identity","compliance"],"products":["historical ownership attribution","operator transitions","valid-time joins"],"rowCount":1,"firstDate":"2018-11-30","lastDate":"2018-11-30","metrics":{"recentRows":0,"currentOperatorTenures":1,"completedOperatorTenures":0},"periods":{},"recentRecords":[]},{"id":"msha-inspections","name":"Inspections","domains":["safety","compliance"],"products":["inspection mix","on-site hours","event context","citation rate denominator"],"rowCount":6,"firstDate":"2020-08-25","lastDate":"2025-12-17","metrics":{"inspectors":6,"recentRows":5,"onSiteHours":10.5,"inspectionHours":28,"inspectionSamples":0},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"357965","EVENT_NO":"F0287C2","INSPECTION_BEGIN_DT":"12/17/2025","INSPECTION_END_DT":"12/18/2025","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"6.75","SUM_TOTAL_ON_SITE_HOURS":"2","sourceDate":"2025-12-17"},{"SOURCE_ROW_NUMBER":"360561","EVENT_NO":"F0112C8","INSPECTION_BEGIN_DT":"02/25/2025","INSPECTION_END_DT":"02/26/2025","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"4.75","SUM_TOTAL_ON_SITE_HOURS":"2.75","sourceDate":"2025-02-25"},{"SOURCE_ROW_NUMBER":"587780","EVENT_NO":"6928238","INSPECTION_BEGIN_DT":"01/18/2024","INSPECTION_END_DT":"01/18/2024","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"6.25","SUM_TOTAL_ON_SITE_HOURS":"2","sourceDate":"2024-01-18"},{"SOURCE_ROW_NUMBER":"967711","EVENT_NO":"6899436","INSPECTION_BEGIN_DT":"05/25/2022","INSPECTION_END_DT":"05/25/2022","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"3.5","SUM_TOTAL_ON_SITE_HOURS":".75","sourceDate":"2022-05-25"},{"SOURCE_ROW_NUMBER":"890057","EVENT_NO":"6894995","INSPECTION_BEGIN_DT":"08/24/2021","INSPECTION_END_DT":"08/25/2021","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"4.25","SUM_TOTAL_ON_SITE_HOURS":"2","sourceDate":"2021-08-24"},{"SOURCE_ROW_NUMBER":"1024520","EVENT_NO":"6894776","INSPECTION_BEGIN_DT":"08/25/2020","INSPECTION_END_DT":"08/28/2020","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"2.5","SUM_TOTAL_ON_SITE_HOURS":"1","sourceDate":"2020-08-25"}]},{"id":"msha-mine-production-quarterly","name":"Mine Employment and Production — Quarterly","domains":["production","safety","compliance"],"products":["production trend","employee hours","rate denominators","seasonality"],"rowCount":29,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2026-Q2":{"hours":123,"employees":1,"production":0},"2026-Q1":{"hours":744,"employees":4,"production":0},"2025-Q4":{"hours":301,"employees":1,"production":0},"2025-Q3":{"hours":434,"employees":2,"production":0},"2025-Q2":{"hours":260,"employees":2,"production":0},"2025-Q1":{"hours":252,"employees":2,"production":0},"2024-Q4":{"hours":275,"employees":2,"production":0},"2024-Q3":{"hours":241,"employees":2,"production":0},"2024-Q2":{"hours":382,"employees":2,"production":0},"2024-Q1":{"hours":240,"employees":1,"production":0},"2023-Q4":{"hours":627,"employees":2,"production":0},"2023-Q3":{"hours":700,"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":7,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2019":{"hours":278,"employees":1,"production":0},"2020":{"hours":1293,"employees":1,"production":0},"2022":{"hours":257,"employees":1,"production":0},"2023":{"hours":2258,"employees":2,"production":0},"2024":{"hours":1138,"employees":2,"production":0},"2025":{"hours":1247,"employees":2,"production":0},"2026":{"hours":867,"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":[]},{"id":"msha-violations","name":"Violations","domains":["compliance","safety","legal"],"products":["citation and order record","condition text","Title 30 linkage","abatement patterns"],"rowCount":1,"firstDate":"2025-02-26","lastDate":"2025-02-26","metrics":{"ss":0,"amountDue":151,"contested":0,"amountPaid":151,"recentRows":1,"section104d":0,"unterminated":0,"proposedPenalty":151},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"360101","VIOLATION_NO":"9808250","VIOLATION_ISSUE_DT":"02/26/2025","SIG_SUB":"N","PART_SECTION":"50.30(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"NoLikelihood","INJ_ILLNESS":"NoLostDays","NO_AFFECTED":"0","NEGLIGENCE":"LowNegligence","TERMINATION_DT":"02/26/2025","PROPOSED_PENALTY":"151","AMOUNT_DUE":"151","AMOUNT_PAID":"151","CONTESTED_IND":"N","sourceDate":"2025-02-26"}]}],"safety":{"href":"/api/v1/mines/0600812/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/0600812/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":"Preparation and submission of MSHA Form 7000-2—Quarterly Employment and Coal Production Report.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-I/part-50/subpart-D/section-50.30","part":"50","subchapter":"I","subpart":"D","id":"50.30","citation":"30 CFR 50.30","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","subchapterHeading":"SUBCHAPTER I—ACCIDENTS, INJURIES, ILLNESSES, EMPLOYMENT, AND PRODUCTION IN MINES","partHeading":"PART 50—NOTIFICATION, INVESTIGATION, REPORTS AND RECORDS OF ACCIDENTS, INJURIES, ILLNESSES, EMPLOYMENT, AND COAL PRODUCTION IN MINES","subpartHeading":"","text":null,"occurrenceCount":1}],"fullCorpus":"/data/title30-sections.json"}}},"meta":{"representation":"json","mineId":"0600812","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804}}