{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-13T11:26:59.401Z","identity":{"mine_id":"3600090","name":"Rockhill Quarry","status":"Abandoned","status_date":"2019-02-19","mine_type":"Surface","coal_metal":"M","commodity":"Crushed, Broken Traprock","state":"PA","county":"Bucks","nearest_town":"Rockhill","operator_id":"L16322","operator_name":"Heidelberg Materials Northeast LLC.","controller_id":"M00004","controller_name":"Heidelberg Materials AG","district":"M2","office":"Kutztown PA Field Office","employees":0,"latitude":40.402222,"longitude":-75.305},"coverage":{"contributingSources":9,"registeredSources":20,"sourceRows":28},"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":"3600090","name":"Rockhill Quarry"},"operator":{"type":"operator","id":"L16322","name":"Heidelberg Materials Northeast LLC."},"controller":{"type":"controller","id":"M00004","name":"Heidelberg Materials AG"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L00032","name":"General Crushed Stone Company"},"object":{"type":"mine","id":"3600090","name":"Rockhill Quarry"},"validFrom":"1950-01-01","validTo":"1988-11-13","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3600090|L00032|1950-01-01|1988-11-13"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00002","name":"Koppers Company Inc"},"object":{"type":"mine","id":"3600090","name":"Rockhill Quarry"},"validFrom":"1950-01-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3600090|M00002|1950-01-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00002","name":"Koppers Company Inc"},"object":{"type":"operator","id":"L00032","name":"General Crushed Stone Company"},"validFrom":"1950-01-01","validTo":"1988-11-13","current":false,"derived":true,"evidenceMineId":"3600090","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3600090|L00032|1950-01-01|M00002|1950-01-01|100332"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00521","name":"Hanson PLC"},"object":{"type":"mine","id":"3600090","name":"Rockhill Quarry"},"validFrom":"1988-11-14","validTo":"2007-08-22","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3600090|M00521|1988-11-14|2007-08-22"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L10621","name":"General Crushed Stone Company"},"object":{"type":"mine","id":"3600090","name":"Rockhill Quarry"},"validFrom":"1988-11-14","validTo":"2003-07-21","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3600090|L10621|1988-11-14|2003-07-21"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00521","name":"Hanson PLC"},"object":{"type":"mine","id":"3600090","name":"Rockhill Quarry"},"validFrom":"1988-11-14","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3600090|M00521|1988-11-14|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00521","name":"Hanson PLC"},"object":{"type":"operator","id":"L10621","name":"General Crushed Stone Company"},"validFrom":"1988-11-14","validTo":"2003-07-21","current":false,"derived":true,"evidenceMineId":"3600090","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3600090|L10621|1988-11-14|M00521|1988-11-14|112468"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M08900","name":"Richard E  Pierson"},"object":{"type":"mine","id":"3600090","name":"Rockhill Quarry"},"validFrom":"1990-02-08","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3600090|M08900|1990-02-08|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L16322","name":"Hanson Aggregates Pennsylvania Inc"},"object":{"type":"mine","id":"3600090","name":"Rockhill Quarry"},"validFrom":"2003-07-22","validTo":"2017-12-10","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3600090|L16322|2003-07-22|2017-12-10"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00521","name":"Hanson PLC"},"object":{"type":"operator","id":"L16322","name":"Hanson Aggregates Pennsylvania Inc"},"validFrom":"2003-07-22","validTo":"2007-08-22","current":false,"derived":true,"evidenceMineId":"3600090","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3600090|L16322|2003-07-22|M00521|1988-11-14|112338"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M00004","name":"Heidelberg Materials AG"},"object":{"type":"mine","id":"3600090","name":"Rockhill Quarry"},"validFrom":"2007-08-23","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3600090|M00004|2007-08-23|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00004","name":"Heidelberg Materials AG"},"object":{"type":"operator","id":"L16322","name":"Hanson Aggregates Pennsylvania Inc"},"validFrom":"2007-08-23","validTo":"2017-12-10","current":false,"derived":true,"evidenceMineId":"3600090","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3600090|L16322|2003-07-22|M00004|2007-08-23|100938"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L11508","name":"Richard E. Pierson Materials Corp."},"object":{"type":"mine","id":"3600090","name":"Rockhill Quarry"},"validFrom":"2017-12-11","validTo":"2025-02-10","current":false,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3600090|L11508|2017-12-11|2025-02-10"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M08900","name":"Richard E  Pierson"},"object":{"type":"operator","id":"L11508","name":"Richard E. Pierson Materials Corp."},"validFrom":"2017-12-11","validTo":"2025-02-10","current":false,"derived":true,"evidenceMineId":"3600090","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3600090|L11508|2017-12-11|M08900|1990-02-08|144385"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"L16322","name":"Heidelberg Materials Northeast LLC."},"object":{"type":"mine","id":"3600090","name":"Rockhill Quarry"},"validFrom":"2025-02-11","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3600090|L16322|2025-02-11|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00004","name":"Heidelberg Materials AG"},"object":{"type":"operator","id":"L16322","name":"Heidelberg Materials Northeast LLC."},"validFrom":"2025-02-11","validTo":null,"current":true,"derived":true,"evidenceMineId":"3600090","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3600090|L16322|2025-02-11|M00004|2007-08-23|100939"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M00521","name":"Hanson PLC"},"object":{"type":"operator","id":"L16322","name":"Heidelberg Materials Northeast LLC."},"validFrom":"2025-02-11","validTo":"2007-08-22","current":false,"derived":true,"evidenceMineId":"3600090","intervalAnomaly":true,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"3600090|L16322|2025-02-11|M00521|1988-11-14|112339"}}],"coverage":{"historyRecords":7,"edgeCount":17,"intervalAnomalies":1,"sourceDatasetId":"msha-controller-operator-history"}},"sources":[{"id":"msha-accidents","name":"Accident, Injuries, and Illnesses","domains":["safety","contractors"],"products":["incident trends","severity rates","equipment patterns","peer denominators"],"rowCount":1,"firstDate":"2018-12-19","lastDate":"2018-12-19","metrics":{"daysLost":25,"injuries":1,"fatalities":0,"recentRows":0,"restrictedDays":60,"contractorRecords":0},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"178928","DOCUMENT_NO":"220190790001","ACCIDENT_DT":"12/19/2018","DEGREE_INJURY":"DYS AWY FRM WRK & RESTRCTD ACT","CLASSIFICATION":"HANDLING OF MATERIALS","ACCIDENT_TYPE":"Struck against stationary object","OCCUPATION":"Outside foreman, Leadman","NO_INJURIES":"1","DAYS_LOST":"25","NARRATIVE":"Employee was removing a drive shaft from a pickup truck, when EE's hand slipped off and got caught in the universal joint and put a deep cut on EE's pinky finger.","sourceDate":"2018-12-19"}]},{"id":"msha-addresses","name":"Addresses of Record","domains":["identity","logistics"],"products":["entity resolution","address history","facility geocoding"],"rowCount":1,"firstDate":"2019-02-19","lastDate":"2019-02-19","metrics":{},"periods":{},"recentRecords":[]},{"id":"msha-assessed-violations","name":"Assessed Violations","domains":["compliance","legal"],"products":["penalty lifecycle","paid and outstanding amounts","assessment aging"],"rowCount":3,"firstDate":"2018-03-26","lastDate":"2018-09-25","metrics":{"ss":1,"delinquent":3,"recentRows":0,"paidPenalty":354,"proposedPenalty":354,"currentAssessment":354},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"2547281","VIOLATION_NO":"9413387","ISSUE_DT":"09/25/2018","CFR_STANDARD_CD":"50.30(a)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"118.00","CURRENT_ASSESSMENT_AMT":"118.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2018-09-25"},{"SOURCE_ROW_NUMBER":"2484112","VIOLATION_NO":"9367335","ISSUE_DT":"03/26/2018","CFR_STANDARD_CD":"56.14100(b)","SIG_SUB_IND":"Y","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"118.00","CURRENT_ASSESSMENT_AMT":"118.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2018-03-26"},{"SOURCE_ROW_NUMBER":"2484111","VIOLATION_NO":"9367334","ISSUE_DT":"03/26/2018","CFR_STANDARD_CD":"56.14100(b)","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"118.00","CURRENT_ASSESSMENT_AMT":"118.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2018-03-26"}]},{"id":"msha-controller-operator-history","name":"Controller and Operator History","domains":["identity","compliance"],"products":["historical ownership attribution","operator transitions","valid-time joins"],"rowCount":7,"firstDate":"1950-01-01","lastDate":"2025-02-11","metrics":{"recentRows":2,"currentOperatorTenures":2,"completedOperatorTenures":5},"periods":{},"recentRecords":[]},{"id":"msha-inspections","name":"Inspections","domains":["safety","compliance"],"products":["inspection mix","on-site hours","event context","citation rate denominator"],"rowCount":4,"firstDate":"2018-03-26","lastDate":"2018-10-16","metrics":{"inspectors":4,"recentRows":0,"onSiteHours":14.5,"inspectionHours":31.75,"inspectionSamples":0},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"408556","EVENT_NO":"6815749","INSPECTION_BEGIN_DT":"10/16/2018","INSPECTION_END_DT":"10/16/2018","ACTIVITY_CODE":"E15","ACTIVITY":"Compliance Follow-up Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"1","SUM_TOTAL_ON_SITE_HOURS":"0","sourceDate":"2018-10-16"},{"SOURCE_ROW_NUMBER":"691467","EVENT_NO":"6813968","INSPECTION_BEGIN_DT":"09/26/2018","INSPECTION_END_DT":"09/26/2018","ACTIVITY_CODE":"E04","ACTIVITY":"Verbal Hazard Complaint Inspections","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"6","SUM_TOTAL_ON_SITE_HOURS":"2","sourceDate":"2018-09-26"},{"SOURCE_ROW_NUMBER":"21362","EVENT_NO":"6811706","INSPECTION_BEGIN_DT":"09/25/2018","INSPECTION_END_DT":"09/25/2018","ACTIVITY_CODE":"E16","ACTIVITY":"Spot Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"1","SUM_TOTAL_ON_SITE_HOURS":"0","sourceDate":"2018-09-25"},{"SOURCE_ROW_NUMBER":"905018","EVENT_NO":"6760217","INSPECTION_BEGIN_DT":"03/26/2018","INSPECTION_END_DT":"04/05/2018","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"23.75","SUM_TOTAL_ON_SITE_HOURS":"12.5","sourceDate":"2018-03-26"}]},{"id":"msha-mine-production-quarterly","name":"Mine Employment and Production — Quarterly","domains":["production","safety","compliance"],"products":["production trend","employee hours","rate denominators","seasonality"],"rowCount":6,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2018-Q4":{"hours":4628,"employees":10,"production":0},"2018-Q3":{"hours":4650,"employees":15,"production":0},"2018-Q2":{"hours":3163,"employees":14,"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":12441,"employees":14,"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":3,"firstDate":"2018-03-26","lastDate":"2018-09-25","metrics":{"ss":1,"amountDue":354,"contested":0,"amountPaid":354,"recentRows":0,"section104d":0,"unterminated":0,"proposedPenalty":354},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"1846694","VIOLATION_NO":"9413387","VIOLATION_ISSUE_DT":"09/25/2018","SIG_SUB":"N","PART_SECTION":"50.30(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"NoLikelihood","INJ_ILLNESS":"NoLostDays","NO_AFFECTED":"0","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"10/16/2018","PROPOSED_PENALTY":"118","AMOUNT_DUE":"118","AMOUNT_PAID":"118","CONTESTED_IND":"N","sourceDate":"2018-09-25"},{"SOURCE_ROW_NUMBER":"1846693","VIOLATION_NO":"9367335","VIOLATION_ISSUE_DT":"03/26/2018","SIG_SUB":"Y","PART_SECTION":"56.14100(b)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"04/05/2018","PROPOSED_PENALTY":"118","AMOUNT_DUE":"118","AMOUNT_PAID":"118","CONTESTED_IND":"N","sourceDate":"2018-03-26"},{"SOURCE_ROW_NUMBER":"1846692","VIOLATION_NO":"9367334","VIOLATION_ISSUE_DT":"03/26/2018","SIG_SUB":"N","PART_SECTION":"56.14100(b)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"04/02/2018","PROPOSED_PENALTY":"118","AMOUNT_DUE":"118","AMOUNT_PAID":"118","CONTESTED_IND":"N","sourceDate":"2018-03-26"}]}],"safety":{"href":"/api/v1/mines/3600090/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/3600090/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},{"chapter":"I","heading":"Safety defects; examination, correction and records.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14100","part":"56","subchapter":"K","subpart":"M","id":"56.14100","citation":"30 CFR 56.14100","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":2}],"fullCorpus":"/data/title30-sections.json"}}},"meta":{"representation":"json","mineId":"3600090","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804}}