{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-13T11:26:59.401Z","identity":{"mine_id":"1901084","name":"RIDDER FARM INC.","status":"Abandoned","status_date":"2005-04-11","mine_type":"Surface","coal_metal":"M","commodity":"Construction Sand and Gravel","state":"MA","county":"Plymouth","nearest_town":"EAST BRIDGEWATER","operator_id":"L17368","operator_name":"Ridder Farm Inc","controller_id":"M13241","controller_name":"Jon  Ridder","district":"M2","office":"Portsmouth NH Field Office","employees":0,"latitude":null,"longitude":null},"coverage":{"contributingSources":10,"registeredSources":20,"sourceRows":73},"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":"1901084","name":"RIDDER FARM INC."},"operator":{"type":"operator","id":"L17368","name":"Ridder Farm Inc"},"controller":{"type":"controller","id":"M13241","name":"Jon  Ridder"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"L17368","name":"Ridder Farm Inc"},"object":{"type":"mine","id":"1901084","name":"RIDDER FARM INC."},"validFrom":"2000-04-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1901084|L17368|2000-04-01|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"M13241","name":"Jon  Ridder"},"object":{"type":"mine","id":"1901084","name":"RIDDER FARM INC."},"validFrom":"2000-04-01","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1901084|M13241|2000-04-01|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"M13241","name":"Jon  Ridder"},"object":{"type":"operator","id":"L17368","name":"Ridder Farm Inc"},"validFrom":"2000-04-01","validTo":null,"current":true,"derived":true,"evidenceMineId":"1901084","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1901084|L17368|2000-04-01|M13241|2000-04-01|155840"}}],"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":"2005-04-11","lastDate":"2005-04-11","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":"2000-05-17","lastDate":"2000-05-17","metrics":{"ss":2,"delinquent":3,"recentRows":0,"paidPenalty":281,"proposedPenalty":281,"currentAssessment":281},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"104144","VIOLATION_NO":"7729974","ISSUE_DT":"05/17/2000","CFR_STANDARD_CD":"56.14132(b)(1)","SIG_SUB_IND":"Y","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"113.00","CURRENT_ASSESSMENT_AMT":"113.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2000-05-17"},{"SOURCE_ROW_NUMBER":"104143","VIOLATION_NO":"7729973","ISSUE_DT":"05/17/2000","CFR_STANDARD_CD":"56.14130(i)","SIG_SUB_IND":"Y","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"113.00","CURRENT_ASSESSMENT_AMT":"113.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2000-05-17"},{"SOURCE_ROW_NUMBER":"104142","VIOLATION_NO":"7729971","ISSUE_DT":"05/17/2000","CFR_STANDARD_CD":"56.1000","SIG_SUB_IND":"N","CITATION_TYPE_CD":"Citation","PROPOSED_PENALTY_AMT":"55.00","CURRENT_ASSESSMENT_AMT":"55.00","ASSESS_CASE_STATUS_CD":"Closed","sourceDate":"2000-05-17"}]},{"id":"msha-contractor-production-quarterly","name":"Contractor Employment and Production — Quarterly","domains":["contractors","production","safety"],"products":["contractor exposure denominator","productivity","presence windows"],"rowCount":2,"firstDate":null,"lastDate":null,"metrics":{"linkedContractors":1,"notMineAttributable":1},"periods":{},"recentRecords":[]},{"id":"msha-contractor-production-yearly","name":"Contractor Employment and Production — Yearly","domains":["contractors","production","safety"],"products":["long-run contractor trend","annual denominator reconciliation"],"rowCount":1,"firstDate":null,"lastDate":null,"metrics":{"linkedContractors":1,"notMineAttributable":1},"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":1,"firstDate":"2000-04-01","lastDate":"2000-04-01","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":7,"firstDate":"2000-05-17","lastDate":"2005-04-07","metrics":{"inspectors":7,"recentRows":0,"onSiteHours":23.5,"inspectionHours":42,"inspectionSamples":0},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"343335","EVENT_NO":"0883674","INSPECTION_BEGIN_DT":"04/07/2005","INSPECTION_END_DT":"04/07/2005","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"8","SUM_TOTAL_ON_SITE_HOURS":"2.5","sourceDate":"2005-04-07"},{"SOURCE_ROW_NUMBER":"989743","EVENT_NO":"0871626","INSPECTION_BEGIN_DT":"10/16/2003","INSPECTION_END_DT":"10/16/2003","ACTIVITY_CODE":"01","ACTIVITY":"REGULAR INSPECTION","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"8","SUM_TOTAL_ON_SITE_HOURS":"4","sourceDate":"2003-10-16"},{"SOURCE_ROW_NUMBER":"657316","EVENT_NO":"0869449","INSPECTION_BEGIN_DT":"01/16/2003","INSPECTION_END_DT":"01/17/2003","ACTIVITY_CODE":"01","ACTIVITY":"REGULAR INSPECTION","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"6","SUM_TOTAL_ON_SITE_HOURS":"3","sourceDate":"2003-01-16"},{"SOURCE_ROW_NUMBER":"866195","EVENT_NO":"0740136","INSPECTION_BEGIN_DT":"04/02/2002","INSPECTION_END_DT":"04/02/2002","ACTIVITY_CODE":"01","ACTIVITY":"REGULAR INSPECTION","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"7","SUM_TOTAL_ON_SITE_HOURS":"5","sourceDate":"2002-04-02"},{"SOURCE_ROW_NUMBER":"505335","EVENT_NO":"0794465","INSPECTION_BEGIN_DT":"08/15/2001","INSPECTION_END_DT":"08/16/2001","ACTIVITY_CODE":"01","ACTIVITY":"REGULAR INSPECTION","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"6","SUM_TOTAL_ON_SITE_HOURS":"3","sourceDate":"2001-08-15"},{"SOURCE_ROW_NUMBER":"977012","EVENT_NO":"0818961","INSPECTION_BEGIN_DT":"09/14/2000","INSPECTION_END_DT":"09/14/2000","ACTIVITY_CODE":"02","ACTIVITY":"COMPLIANCE FOLLOW-UP INSPECTION","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"3","SUM_TOTAL_ON_SITE_HOURS":"2","sourceDate":"2000-09-14"},{"SOURCE_ROW_NUMBER":"871442","EVENT_NO":"0749652","INSPECTION_BEGIN_DT":"05/17/2000","INSPECTION_END_DT":"05/18/2000","ACTIVITY_CODE":"01","ACTIVITY":"REGULAR INSPECTION","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"4","SUM_TOTAL_ON_SITE_HOURS":"4","sourceDate":"2000-05-17"}]},{"id":"msha-mine-production-quarterly","name":"Mine Employment and Production — Quarterly","domains":["production","safety","compliance"],"products":["production trend","employee hours","rate denominators","seasonality"],"rowCount":42,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2005-Q2":{"hours":1295,"employees":5,"production":0},"2005-Q1":{"hours":880,"employees":5,"production":0},"2004-Q4":{"hours":1110,"employees":5,"production":0},"2004-Q3":{"hours":1195,"employees":5,"production":0},"2004-Q2":{"hours":1325,"employees":5,"production":0},"2004-Q1":{"hours":900,"employees":4,"production":0},"2003-Q4":{"hours":1030,"employees":4,"production":0},"2003-Q3":{"hours":1245,"employees":4,"production":0},"2003-Q2":{"hours":1205,"employees":4,"production":0},"2003-Q1":{"hours":945,"employees":5,"production":0},"2002-Q4":{"hours":1030,"employees":4,"production":0},"2002-Q3":{"hours":1230,"employees":4,"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":12,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2000":{"hours":3736,"employees":4,"production":0},"2001":{"hours":4413,"employees":4,"production":0},"2002":{"hours":4415,"employees":4,"production":0},"2003":{"hours":4425,"employees":4,"production":0},"2004":{"hours":4530,"employees":5,"production":0},"2005":{"hours":2175,"employees":5,"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":"2000-05-17","lastDate":"2000-05-17","metrics":{"ss":2,"amountDue":281,"contested":0,"amountPaid":281,"recentRows":0,"section104d":0,"unterminated":0,"proposedPenalty":281},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"1277567","VIOLATION_NO":"7729974","VIOLATION_ISSUE_DT":"05/17/2000","SIG_SUB":"Y","PART_SECTION":"56.14132(b)(1)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"Fatal","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"09/14/2000","PROPOSED_PENALTY":"113","AMOUNT_DUE":"113","AMOUNT_PAID":"113","CONTESTED_IND":"N","sourceDate":"2000-05-17"},{"SOURCE_ROW_NUMBER":"1277566","VIOLATION_NO":"7729973","VIOLATION_ISSUE_DT":"05/17/2000","SIG_SUB":"Y","PART_SECTION":"56.14130(i)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Reasonably","INJ_ILLNESS":"Fatal","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"09/14/2000","PROPOSED_PENALTY":"113","AMOUNT_DUE":"113","AMOUNT_PAID":"113","CONTESTED_IND":"N","sourceDate":"2000-05-17"},{"SOURCE_ROW_NUMBER":"1277565","VIOLATION_NO":"7729971","VIOLATION_ISSUE_DT":"05/17/2000","SIG_SUB":"N","PART_SECTION":"56.1000","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"NoLikelihood","INJ_ILLNESS":"NoLostDays","NO_AFFECTED":"0","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"05/17/2000","PROPOSED_PENALTY":"55","AMOUNT_DUE":"55","AMOUNT_PAID":"55","CONTESTED_IND":"N","sourceDate":"2000-05-17"}]}],"safety":{"href":"/api/v1/mines/1901084/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/1901084/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":"Horns and backup alarms.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14132","part":"56","subchapter":"K","subpart":"M","id":"56.14132","citation":"30 CFR 56.14132","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},{"chapter":"I","heading":"Roll-over protective structures (ROPS) and seat belts.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14130","part":"56","subchapter":"K","subpart":"M","id":"56.14130","citation":"30 CFR 56.14130","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},{"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":"1901084","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804}}