{"schemaVersion":"realm.silica.v1","mineId":"3604403","mineName":"M & M LIME COMPANY INCORPORATED","filters":{"year":"2026","dataset":"all","status":"all"},"options":{"years":["2026","2025","2024","2020","2017","2016","2009","2004","2003","2001"],"datasets":{"coal":{"id":"msha-quartz-samples","label":"Coal quartz","definitionUrl":"https://arlweb.msha.gov/OpenGovernmentData/DataSets/Quartz_Samples_Definition_File.txt"},"personal":{"id":"msha-personal-health-samples","label":"Metal/nonmetal personal","definitionUrl":"https://arlweb.msha.gov/OpenGovernmentData/DataSets/Personal_Health_Samples_Definition_File.txt"},"area":{"id":"msha-area-samples","label":"Metal/nonmetal area","definitionUrl":"https://arlweb.msha.gov/OpenGovernmentData/DataSets/Area_Samples_Definition_File.txt"}},"statuses":{"not_voided":"Not voided","voided":"Voided","not_reported":"Not reported"}},"coverage":{"scope":"full_mine_history","totalSilicaRows":37,"sourceCoverage":[{"dataset":"coal","sourceRows":0,"retainedRows":0},{"dataset":"personal","sourceRows":317,"retainedRows":317},{"dataset":"area","sourceRows":19,"retainedRows":19}],"invalidOrFutureDateRows":0,"firstDate":"2026-03-31","lastDate":"2026-08-25"},"summary":{"total":12,"coal":0,"personal":12,"area":0,"notVoided":0,"voided":0,"statusNotReported":12,"coalMeasured":0,"coalMissingConcentration":0,"coalMeanUgM3":null,"coalMaxUgM3":null,"personalMeasured":12,"personalAbovePublishedLimit":2},"quarters":[{"quarter":"2026-Q1","coalMeanUgM3":null,"coalMeasurementCount":0,"personalMeanExposureRatio":0.1,"personalMeasurementCount":5,"partialQuarter":false},{"quarter":"2026-Q2","coalMeanUgM3":null,"coalMeasurementCount":0,"personalMeanExposureRatio":0.2625,"personalMeasurementCount":4,"partialQuarter":false},{"quarter":"2026-Q3","coalMeanUgM3":null,"coalMeasurementCount":0,"personalMeanExposureRatio":0.37000000000000005,"personalMeasurementCount":3,"partialQuarter":false},{"quarter":"2026-Q4","coalMeanUgM3":null,"coalMeasurementCount":0,"personalMeanExposureRatio":null,"personalMeasurementCount":0,"partialQuarter":true}],"data":[{"key":"msha-personal-health-samples:314086","dataset":"personal","sourceId":"msha-personal-health-samples","sourceRowNumber":"314086","sampleId":"000000202603472300","laboratoryId":null,"date":"2026-08-25","dateRaw":"08/25/2026","dateStatus":"reported","analyte":"Quartz, respirable, >1% Qtz","occupation":"Front-end Loader Operator","sampleType":null,"status":"not_reported","statusDetail":null,"quartzPercent":null,"quartzConcentrationUgM3":null,"sourceConcentration":"0000.15","sourceExposureLimit":"0000.00","sourceConcentrationUnit":null,"exposureRatio":0,"action":"NO ACTION","eventId":"F028F8A","controlOrInvalid":false,"raw":{"SOURCE_ROW_NUMBER":"314086","SAMPLE_NO":"000000202603472300","SAMPLE_DATE":"08/25/2026","CONTAMINANT_CD":"00523","CONTAMINANT_DESC":"Quartz, respirable, >1% Qtz","CONCENTRATION":" 0000.15","EXPOSURE_LIMIT":" 0000.00","C_OVER_E":" 00.00","JOB_CD_DESC":"Front-end Loader Operator","EVENT_NO":"F028F8A","ACTION_TAKEN_DESC":"NO ACTION                                                                      "}},{"key":"msha-personal-health-samples:314087","dataset":"personal","sourceId":"msha-personal-health-samples","sourceRowNumber":"314087","sampleId":"000000202603472400","laboratoryId":null,"date":"2026-08-25","dateRaw":"08/25/2026","dateStatus":"reported","analyte":"Quartz, respirable, >1% Qtz","occupation":"Scaling (mechanical)","sampleType":null,"status":"not_reported","statusDetail":null,"quartzPercent":null,"quartzConcentrationUgM3":null,"sourceConcentration":"0002.21","sourceExposureLimit":"0002.00","sourceConcentrationUnit":null,"exposureRatio":1.11,"action":"NO ACTION","eventId":"F028F8A","controlOrInvalid":false,"raw":{"SOURCE_ROW_NUMBER":"314087","SAMPLE_NO":"000000202603472400","SAMPLE_DATE":"08/25/2026","CONTAMINANT_CD":"00523","CONTAMINANT_DESC":"Quartz, respirable, >1% Qtz","CONCENTRATION":" 0002.21","EXPOSURE_LIMIT":" 0002.00","C_OVER_E":" 01.11","JOB_CD_DESC":"Scaling (mechanical)","EVENT_NO":"F028F8A","ACTION_TAKEN_DESC":"NO ACTION                                                                      "}},{"key":"msha-personal-health-samples:314201","dataset":"personal","sourceId":"msha-personal-health-samples","sourceRowNumber":"314201","sampleId":"000000202603472200","laboratoryId":null,"date":"2026-08-25","dateRaw":"08/25/2026","dateStatus":"reported","analyte":"Quartz, respirable, >1% Qtz","occupation":"Truck Driver","sampleType":null,"status":"not_reported","statusDetail":null,"quartzPercent":null,"quartzConcentrationUgM3":null,"sourceConcentration":"0000.13","sourceExposureLimit":"0000.00","sourceConcentrationUnit":null,"exposureRatio":0,"action":"NO ACTION","eventId":"F028F8A","controlOrInvalid":false,"raw":{"SOURCE_ROW_NUMBER":"314201","SAMPLE_NO":"000000202603472200","SAMPLE_DATE":"08/25/2026","CONTAMINANT_CD":"00523","CONTAMINANT_DESC":"Quartz, respirable, >1% Qtz","CONCENTRATION":" 0000.13","EXPOSURE_LIMIT":" 0000.00","C_OVER_E":" 00.00","JOB_CD_DESC":"Truck Driver","EVENT_NO":"F028F8A","ACTION_TAKEN_DESC":"NO ACTION                                                                      "}},{"key":"msha-personal-health-samples:310758","dataset":"personal","sourceId":"msha-personal-health-samples","sourceRowNumber":"310758","sampleId":"000000202602579300","laboratoryId":null,"date":"2026-06-23","dateRaw":"06/23/2026","dateStatus":"reported","analyte":"Quartz, respirable, >1% Qtz","occupation":"Blaster, Powder Gang","sampleType":null,"status":"not_reported","statusDetail":null,"quartzPercent":null,"quartzConcentrationUgM3":null,"sourceConcentration":"0002.34","sourceExposureLimit":"0002.22","sourceConcentrationUnit":null,"exposureRatio":1.05,"action":"LAB RESULTS INDICATE EXPOSURE LIMIT EXCEEDED","eventId":"F02DA39","controlOrInvalid":false,"raw":{"SOURCE_ROW_NUMBER":"310758","SAMPLE_NO":"000000202602579300","SAMPLE_DATE":"06/23/2026","CONTAMINANT_CD":"00523","CONTAMINANT_DESC":"Quartz, respirable, >1% Qtz","CONCENTRATION":" 0002.34","EXPOSURE_LIMIT":" 0002.22","C_OVER_E":" 01.05","JOB_CD_DESC":"Blaster, Powder Gang","EVENT_NO":"F02DA39","ACTION_TAKEN_DESC":"LAB RESULTS INDICATE EXPOSURE LIMIT EXCEEDED                                   "}},{"key":"msha-personal-health-samples:310759","dataset":"personal","sourceId":"msha-personal-health-samples","sourceRowNumber":"310759","sampleId":"000000202602579400","laboratoryId":null,"date":"2026-06-23","dateRaw":"06/23/2026","dateStatus":"reported","analyte":"Quartz, respirable, >1% Qtz","occupation":"Truck Driver","sampleType":null,"status":"not_reported","statusDetail":null,"quartzPercent":null,"quartzConcentrationUgM3":null,"sourceConcentration":"0000.28","sourceExposureLimit":"0000.00","sourceConcentrationUnit":null,"exposureRatio":0,"action":"NO ACTION","eventId":"F02DA39","controlOrInvalid":false,"raw":{"SOURCE_ROW_NUMBER":"310759","SAMPLE_NO":"000000202602579400","SAMPLE_DATE":"06/23/2026","CONTAMINANT_CD":"00523","CONTAMINANT_DESC":"Quartz, respirable, >1% Qtz","CONCENTRATION":" 0000.28","EXPOSURE_LIMIT":" 0000.00","C_OVER_E":" 00.00","JOB_CD_DESC":"Truck Driver","EVENT_NO":"F02DA39","ACTION_TAKEN_DESC":"NO ACTION                                                                      "}},{"key":"msha-personal-health-samples:310760","dataset":"personal","sourceId":"msha-personal-health-samples","sourceRowNumber":"310760","sampleId":"000000202602579500","laboratoryId":null,"date":"2026-06-23","dateRaw":"06/23/2026","dateStatus":"reported","analyte":"Quartz, respirable, >1% Qtz","occupation":"Front-end Loader Operator","sampleType":null,"status":"not_reported","statusDetail":null,"quartzPercent":null,"quartzConcentrationUgM3":null,"sourceConcentration":"0000.16","sourceExposureLimit":"0000.00","sourceConcentrationUnit":null,"exposureRatio":0,"action":"NO ACTION","eventId":"F02DA39","controlOrInvalid":false,"raw":{"SOURCE_ROW_NUMBER":"310760","SAMPLE_NO":"000000202602579500","SAMPLE_DATE":"06/23/2026","CONTAMINANT_CD":"00523","CONTAMINANT_DESC":"Quartz, respirable, >1% Qtz","CONCENTRATION":" 0000.16","EXPOSURE_LIMIT":" 0000.00","C_OVER_E":" 00.00","JOB_CD_DESC":"Front-end Loader Operator","EVENT_NO":"F02DA39","ACTION_TAKEN_DESC":"NO ACTION                                                                      "}},{"key":"msha-personal-health-samples:310761","dataset":"personal","sourceId":"msha-personal-health-samples","sourceRowNumber":"310761","sampleId":"000000202602579600","laboratoryId":null,"date":"2026-06-23","dateRaw":"06/23/2026","dateStatus":"reported","analyte":"Quartz, respirable, >1% Qtz","occupation":"Scaling (mechanical)","sampleType":null,"status":"not_reported","statusDetail":null,"quartzPercent":null,"quartzConcentrationUgM3":null,"sourceConcentration":"0000.36","sourceExposureLimit":"0000.00","sourceConcentrationUnit":null,"exposureRatio":0,"action":"NO ACTION","eventId":"F02DA39","controlOrInvalid":false,"raw":{"SOURCE_ROW_NUMBER":"310761","SAMPLE_NO":"000000202602579600","SAMPLE_DATE":"06/23/2026","CONTAMINANT_CD":"00523","CONTAMINANT_DESC":"Quartz, respirable, >1% Qtz","CONCENTRATION":" 0000.36","EXPOSURE_LIMIT":" 0000.00","C_OVER_E":" 00.00","JOB_CD_DESC":"Scaling (mechanical)","EVENT_NO":"F02DA39","ACTION_TAKEN_DESC":"NO ACTION                                                                      "}},{"key":"msha-personal-health-samples:312617","dataset":"personal","sourceId":"msha-personal-health-samples","sourceRowNumber":"312617","sampleId":"000000202601338800","laboratoryId":null,"date":"2026-03-31","dateRaw":"03/31/2026","dateStatus":"reported","analyte":"Quartz, respirable, >1% Qtz","occupation":"Drill Operator, Rotary","sampleType":null,"status":"not_reported","statusDetail":null,"quartzPercent":null,"quartzConcentrationUgM3":null,"sourceConcentration":"0000.31","sourceExposureLimit":"0000.00","sourceConcentrationUnit":null,"exposureRatio":0,"action":"NO ACTION","eventId":"F00E7BD","controlOrInvalid":false,"raw":{"SOURCE_ROW_NUMBER":"312617","SAMPLE_NO":"000000202601338800","SAMPLE_DATE":"03/31/2026","CONTAMINANT_CD":"00523","CONTAMINANT_DESC":"Quartz, respirable, >1% Qtz","CONCENTRATION":" 0000.31","EXPOSURE_LIMIT":" 0000.00","C_OVER_E":" 00.00","JOB_CD_DESC":"Drill Operator, Rotary","EVENT_NO":"F00E7BD","ACTION_TAKEN_DESC":"NO ACTION                                                                      "}},{"key":"msha-personal-health-samples:312618","dataset":"personal","sourceId":"msha-personal-health-samples","sourceRowNumber":"312618","sampleId":"000000202601338900","laboratoryId":null,"date":"2026-03-31","dateRaw":"03/31/2026","dateStatus":"reported","analyte":"Quartz, respirable, >1% Qtz","occupation":"Scaling (mechanical)","sampleType":null,"status":"not_reported","statusDetail":null,"quartzPercent":null,"quartzConcentrationUgM3":null,"sourceConcentration":"0000.94","sourceExposureLimit":"0001.89","sourceConcentrationUnit":null,"exposureRatio":0.5,"action":"NO ACTION","eventId":"F00E7BD","controlOrInvalid":false,"raw":{"SOURCE_ROW_NUMBER":"312618","SAMPLE_NO":"000000202601338900","SAMPLE_DATE":"03/31/2026","CONTAMINANT_CD":"00523","CONTAMINANT_DESC":"Quartz, respirable, >1% Qtz","CONCENTRATION":" 0000.94","EXPOSURE_LIMIT":" 0001.89","C_OVER_E":" 00.50","JOB_CD_DESC":"Scaling (mechanical)","EVENT_NO":"F00E7BD","ACTION_TAKEN_DESC":"NO ACTION                                                                      "}},{"key":"msha-personal-health-samples:312619","dataset":"personal","sourceId":"msha-personal-health-samples","sourceRowNumber":"312619","sampleId":"000000202601339000","laboratoryId":null,"date":"2026-03-31","dateRaw":"03/31/2026","dateStatus":"reported","analyte":"Quartz, respirable, >1% Qtz","occupation":"Truck Driver","sampleType":null,"status":"not_reported","statusDetail":null,"quartzPercent":null,"quartzConcentrationUgM3":null,"sourceConcentration":"0000.32","sourceExposureLimit":"0000.00","sourceConcentrationUnit":null,"exposureRatio":0,"action":"NO ACTION","eventId":"F00E7BD","controlOrInvalid":false,"raw":{"SOURCE_ROW_NUMBER":"312619","SAMPLE_NO":"000000202601339000","SAMPLE_DATE":"03/31/2026","CONTAMINANT_CD":"00523","CONTAMINANT_DESC":"Quartz, respirable, >1% Qtz","CONCENTRATION":" 0000.32","EXPOSURE_LIMIT":" 0000.00","C_OVER_E":" 00.00","JOB_CD_DESC":"Truck Driver","EVENT_NO":"F00E7BD","ACTION_TAKEN_DESC":"NO ACTION                                                                      "}},{"key":"msha-personal-health-samples:312620","dataset":"personal","sourceId":"msha-personal-health-samples","sourceRowNumber":"312620","sampleId":"000000202601339100","laboratoryId":null,"date":"2026-03-31","dateRaw":"03/31/2026","dateStatus":"reported","analyte":"Quartz, respirable, >1% Qtz","occupation":"Blaster, Powder Gang","sampleType":null,"status":"not_reported","statusDetail":null,"quartzPercent":null,"quartzConcentrationUgM3":null,"sourceConcentration":"0000.22","sourceExposureLimit":"0000.00","sourceConcentrationUnit":null,"exposureRatio":0,"action":"NO ACTION","eventId":"F00E7BD","controlOrInvalid":false,"raw":{"SOURCE_ROW_NUMBER":"312620","SAMPLE_NO":"000000202601339100","SAMPLE_DATE":"03/31/2026","CONTAMINANT_CD":"00523","CONTAMINANT_DESC":"Quartz, respirable, >1% Qtz","CONCENTRATION":" 0000.22","EXPOSURE_LIMIT":" 0000.00","C_OVER_E":" 00.00","JOB_CD_DESC":"Blaster, Powder Gang","EVENT_NO":"F00E7BD","ACTION_TAKEN_DESC":"NO ACTION                                                                      "}},{"key":"msha-personal-health-samples:312621","dataset":"personal","sourceId":"msha-personal-health-samples","sourceRowNumber":"312621","sampleId":"000000202601339200","laboratoryId":null,"date":"2026-03-31","dateRaw":"03/31/2026","dateStatus":"reported","analyte":"Quartz, respirable, >1% Qtz","occupation":"Truck Driver","sampleType":null,"status":"not_reported","statusDetail":null,"quartzPercent":null,"quartzConcentrationUgM3":null,"sourceConcentration":"0000.24","sourceExposureLimit":"0000.00","sourceConcentrationUnit":null,"exposureRatio":0,"action":"NO ACTION","eventId":"F00E7BD","controlOrInvalid":false,"raw":{"SOURCE_ROW_NUMBER":"312621","SAMPLE_NO":"000000202601339200","SAMPLE_DATE":"03/31/2026","CONTAMINANT_CD":"00523","CONTAMINANT_DESC":"Quartz, respirable, >1% Qtz","CONCENTRATION":" 0000.24","EXPOSURE_LIMIT":" 0000.00","C_OVER_E":" 00.00","JOB_CD_DESC":"Truck Driver","EVENT_NO":"F00E7BD","ACTION_TAKEN_DESC":"NO ACTION                                                                      "}}],"pagination":{"page":1,"pageSize":20,"totalRows":12,"totalPages":1},"units":{"quartzPercent":"%","quartzConcentrationUgM3":"µg/m³","exposureRatio":"concentration / published exposure limit","sourceConcentration":"Unit not specified in MSHA personal/area data dictionary; retained as reported"},"notes":["Coal means use numeric concentrations from samples marked not voided, excluding control/invalid sample types and dates after the snapshot. Missing values remain null; reported zeroes remain zero.","Quarterly means describe available samples, not mine-wide or worker-average exposure. Quarters with no eligible measurements remain empty; the current quarter is partial.","Personal C/E is MSHA's published concentration-to-limit ratio. A value above 1 is not by itself a citation or a determination under the 2024 silica rule. Personal and area files do not publish a void-status field.","Area records include bulk-dust analyses and are kept separate from personal exposure results. Their concentration units are not specified in the source dictionary.","Missing samples do not establish safe conditions. Coal quartz percentage and concentration are separate measures. No compliance threshold is inferred for coal samples."],"meta":{"dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.000Z","sourceCount":20,"totalRows":17906804,"snapshotAt":"2026-10-13T11:19:05.459773+00:00"}}