{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-13T11:26:59.401Z","identity":{"mine_id":"1519114","name":"C-5","status":"Abandoned and Sealed","status_date":"2014-11-21","mine_type":"Underground","coal_metal":"C","commodity":"Coal (Bituminous)","state":"KY","county":"Harlan","nearest_town":"Cloversplint","operator_id":"P31844","operator_name":"Rex Coal Company Inc.","controller_id":"C15915","controller_name":"Joseph T  Bennett","district":"C07","office":"Harlan KY Field Office","employees":0,"latitude":36.898611,"longitude":-83.061667},"coverage":{"contributingSources":17,"registeredSources":20,"sourceRows":2295},"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":"1519114","name":"C-5"},"operator":{"type":"operator","id":"P31844","name":"Rex Coal Company Inc."},"controller":{"type":"controller","id":"C15915","name":"Joseph T  Bennett"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"controller_controls_mine","subject":{"type":"controller","id":"C15915","name":"Joseph T  Bennett  et al"},"object":{"type":"mine","id":"1519114","name":"C-5"},"validFrom":"2002-02-15","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519114|C15915|2002-02-15|"}},{"type":"operator_operates_mine","subject":{"type":"operator","id":"P31844","name":"Rex Coal Company Inc."},"object":{"type":"mine","id":"1519114","name":"C-5"},"validFrom":"2007-05-17","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519114|P31844|2007-05-17|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"C15915","name":"Joseph T  Bennett  et al"},"object":{"type":"operator","id":"P31844","name":"Rex Coal Company Inc."},"validFrom":"2007-05-17","validTo":null,"current":true,"derived":true,"evidenceMineId":"1519114","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1519114|P31844|2007-05-17|C15915|2002-02-15|97604"}}],"coverage":{"historyRecords":1,"edgeCount":3,"intervalAnomalies":0,"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":11,"firstDate":"2008-02-28","lastDate":"2012-02-06","metrics":{"daysLost":670,"injuries":10,"fatalities":0,"recentRows":0,"restrictedDays":0,"contractorRecords":0},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"242530","DOCUMENT_NO":"220120550021","ACCIDENT_DT":"02/06/2012","DEGREE_INJURY":"NO DYS AWY FRM WRK,NO RSTR ACT","CLASSIFICATION":"HANDTOOLS (NONPOWERED)","ACCIDENT_TYPE":"Struck by... 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The doctors are saying he will be off for a few weeks.","sourceDate":"2012-01-25"},{"SOURCE_ROW_NUMBER":"70274","DOCUMENT_NO":"220103050018","ACCIDENT_DT":"10/25/2010","DEGREE_INJURY":"DAYS AWAY FROM WORK ONLY","CLASSIFICATION":"FALL OF ROOF OR BACK","ACCIDENT_TYPE":"Struck by falling object","OCCUPATION":"Discontinued 1/31/2014.  Several other codes cover Scoop Car Operator","NO_INJURIES":"1","DAYS_LOST":"10","NARRATIVE":"Ee was standing beside the rib, when a piece of rock fell from the roof and hit him in the head and shoulder.  Injuries are numerous but not life threating or debilitating.  Doctors are saying he will be off for two or three months, maybe more.","sourceDate":"2010-10-25"},{"SOURCE_ROW_NUMBER":"212317","DOCUMENT_NO":"220102870006","ACCIDENT_DT":"09/17/2010","DEGREE_INJURY":"DAYS AWAY FROM WORK ONLY","CLASSIFICATION":"HANDLING OF MATERIALS","ACCIDENT_TYPE":"Over-exertion NEC","OCCUPATION":"Roof bolter, Rock bolter,  Pinner, Mobile roof support operator (MRS)","NO_INJURIES":"1","DAYS_LOST":"28","NARRATIVE":"Ee was bending a 4' bolt in low top.  Caused him to have a hernia.  He is now off due to surgery.","sourceDate":"2010-09-17"},{"SOURCE_ROW_NUMBER":"23070","DOCUMENT_NO":"220102500035","ACCIDENT_DT":"08/25/2010","DEGREE_INJURY":"DAYS AWAY FROM WORK ONLY","CLASSIFICATION":"POWERED HAULAGE","ACCIDENT_TYPE":"Struck by falling object","OCCUPATION":"Maintenance man, Mechanic,  Repair/Serviceman, Boilermaker, Fueler, Tire tech, Field service tech","NO_INJURIES":"1","DAYS_LOST":"151","NARRATIVE":"Ee is a repairman.  He was using a buggy for transportation when he hit a timber with the buggy.  This moved the timber so that a piece of rock fell from the top and hit him on the neck and shoulder.","sourceDate":"2010-08-25"},{"SOURCE_ROW_NUMBER":"14499","DOCUMENT_NO":"220093370013","ACCIDENT_DT":"11/26/2009","DEGREE_INJURY":"ACCIDENT ONLY","CLASSIFICATION":"FIRE","ACCIDENT_TYPE":"Accident type, without injuries","OCCUPATION":"NO VALUE FOUND","NO_INJURIES":"0","DAYS_LOST":"0","NARRATIVE":"EE was cutting holes in tail piece for spill skirt installation.  The CO monitor was sounding off.  EE could not make the outside man understand how to cut it off.  EE left the area to turn off the CO monitor.  He was away from the area for a long while so that he could eat lunch.  When he returned, he discovered smoke and fire at the tail piece.","sourceDate":"2009-11-26"},{"SOURCE_ROW_NUMBER":"130351","DOCUMENT_NO":"220100040014","ACCIDENT_DT":"10/13/2009","DEGREE_INJURY":"DAYS AWAY FROM WORK ONLY","CLASSIFICATION":"POWERED HAULAGE","ACCIDENT_TYPE":"Struck against a moving object","OCCUPATION":"Roof bolter, Rock bolter,  Pinner, Mobile roof support operator (MRS)","NO_INJURIES":"1","DAYS_LOST":"79","NARRATIVE":"A repairman and the Ee had a scoop jacked-up on blocks.  The blocks kicked out causing the scoop to drop 3 to 4 feet.  Ee was in the drivers compartment.  This sudden drop tossed Ee around in the compartment which hurt his back.  He has a compression fracture.","sourceDate":"2009-10-13"},{"SOURCE_ROW_NUMBER":"65985","DOCUMENT_NO":"220091420018","ACCIDENT_DT":"05/12/2009","DEGREE_INJURY":"DAYS AWAY FROM WORK ONLY","CLASSIFICATION":"HANDLING OF MATERIALS","ACCIDENT_TYPE":"Struck by falling object","OCCUPATION":"Bull gang foreman, Labor foreman, Leadman, Section foreman, Shift boss","NO_INJURIES":"1","DAYS_LOST":"10","NARRATIVE":"The rub rail on the miner was being removed when it fell and hit Ee on foot.  The impact broke his little toe.  Required surgery to repair.  Ee will be off work a couple or three weeks.","sourceDate":"2009-05-12"},{"SOURCE_ROW_NUMBER":"125990","DOCUMENT_NO":"220090830023","ACCIDENT_DT":"03/11/2009","DEGREE_INJURY":"DAYS AWAY FROM WORK ONLY","CLASSIFICATION":"MACHINERY","ACCIDENT_TYPE":"Caught in, under or between a moving and a stationary object","OCCUPATION":"Roof bolter, Rock bolter,  Pinner, Mobile roof support operator (MRS)","NO_INJURIES":"1","DAYS_LOST":"11","NARRATIVE":"EE operates a roof bolter.  His hand got caught in canopy when it came down.  He simply had his hand in the wrong place at the wrong time, and he knew it.  It mashed his thumb so much that it broke it.  Will be off a two or three weeks.","sourceDate":"2009-03-11"},{"SOURCE_ROW_NUMBER":"18732","DOCUMENT_NO":"220081370030","ACCIDENT_DT":"04/30/2008","DEGREE_INJURY":"DAYS AWAY FROM WORK ONLY","CLASSIFICATION":"HANDLING OF MATERIALS","ACCIDENT_TYPE":"Over-exertion NEC","OCCUPATION":"Beltman, Conveyor man,  Conveyor belt worker, Mobile bridge carrierman, Feeder operator, Conveyor rider","NO_INJURIES":"1","DAYS_LOST":"293","NARRATIVE":"Employee bent down to shovel a belt when his knee popped.  Doctors are saying that his knee cap may have popped loose and a little physical therapy should take care of the problem.","sourceDate":"2008-04-30"},{"SOURCE_ROW_NUMBER":"199316","DOCUMENT_NO":"220080730014","ACCIDENT_DT":"02/28/2008","DEGREE_INJURY":"DAYS AWAY FROM WORK ONLY","CLASSIFICATION":"MACHINERY","ACCIDENT_TYPE":"Caught in, under or between running or meshing objects","OCCUPATION":"Roof bolter, Rock bolter,  Pinner, Mobile roof support operator (MRS)","NO_INJURIES":"1","DAYS_LOST":"3","NARRATIVE":"Ee operates a roof bolter.  He caught his finger in between head and arm of the bolter.  This pinched his skin to the point of looking like a cut.  Three stitches required.  No lasting problems.","sourceDate":"2008-02-28"}]},{"id":"msha-addresses","name":"Addresses of Record","domains":["identity","logistics"],"products":["entity resolution","address history","facility geocoding"],"rowCount":1,"firstDate":"2014-11-21","lastDate":"2014-11-21","metrics":{},"periods":{},"recentRecords":[]},{"id":"msha-assessed-violations","name":"Assessed Violations","domains":["compliance","legal"],"products":["penalty lifecycle","paid and outstanding amounts","assessment 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patterns"],"rowCount":481,"firstDate":"2007-09-04","lastDate":"2014-05-13","metrics":{"ss":116,"amountDue":210089,"contested":141,"amountPaid":141537,"recentRows":0,"section104d":2,"unterminated":1,"proposedPenalty":256654},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"1118113","VIOLATION_NO":"8348520","VIOLATION_ISSUE_DT":"05/13/2014","SIG_SUB":"N","SECTION_OF_ACT":"316(b)(2)(F)(ii)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"NoLikelihood","INJ_ILLNESS":"NoLostDays","NO_AFFECTED":"1","NEGLIGENCE":"LowNegligence","TERMINATION_DT":"05/27/2014","PROPOSED_PENALTY":"112","AMOUNT_DUE":"112","AMOUNT_PAID":"112","CONTESTED_IND":"N","sourceDate":"2014-05-13"},{"SOURCE_ROW_NUMBER":"1118112","VIOLATION_NO":"8348516","VIOLATION_ISSUE_DT":"04/09/2014","SIG_SUB":"N","SECTION_OF_ACT":"316(b)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"04/10/2014","PROPOSED_PENALTY":"121","AMOUNT_DUE":"121","AMOUNT_PAID":"121","CONTESTED_IND":"N","sourceDate":"2014-04-09"},{"SOURCE_ROW_NUMBER":"1118111","VIOLATION_NO":"8348515","VIOLATION_ISSUE_DT":"04/08/2014","SIG_SUB":"N","PART_SECTION":"75.514","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"04/10/2014","PROPOSED_PENALTY":"138","AMOUNT_DUE":"138","AMOUNT_PAID":"138","CONTESTED_IND":"N","sourceDate":"2014-04-08"},{"SOURCE_ROW_NUMBER":"1118055","VIOLATION_NO":"8348514","VIOLATION_ISSUE_DT":"03/20/2014","SIG_SUB":"N","PART_SECTION":"75.1714-8(a)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"NoLikelihood","INJ_ILLNESS":"NoLostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"04/08/2014","PROPOSED_PENALTY":"100","AMOUNT_DUE":"100","AMOUNT_PAID":"100","CONTESTED_IND":"N","sourceDate":"2014-03-20"},{"SOURCE_ROW_NUMBER":"1118054","VIOLATION_NO":"8348513","VIOLATION_ISSUE_DT":"03/13/2014","SIG_SUB":"N","PART_SECTION":"75.364(a)(1)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"04/09/2014","PROPOSED_PENALTY":"138","AMOUNT_DUE":"138","AMOUNT_PAID":"138","CONTESTED_IND":"N","sourceDate":"2014-03-13"},{"SOURCE_ROW_NUMBER":"1118053","VIOLATION_NO":"8348512","VIOLATION_ISSUE_DT":"03/12/2014","SIG_SUB":"N","PART_SECTION":"75.370(a)(1)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"03/12/2014","PROPOSED_PENALTY":"138","AMOUNT_DUE":"138","AMOUNT_PAID":"138","CONTESTED_IND":"N","sourceDate":"2014-03-12"},{"SOURCE_ROW_NUMBER":"1118052","VIOLATION_NO":"8348511","VIOLATION_ISSUE_DT":"03/06/2014","SIG_SUB":"N","PART_SECTION":"75.310(a)(3)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"03/06/2014","PROPOSED_PENALTY":"138","AMOUNT_DUE":"138","AMOUNT_PAID":"138","CONTESTED_IND":"N","sourceDate":"2014-03-06"},{"SOURCE_ROW_NUMBER":"1118051","VIOLATION_NO":"8348510","VIOLATION_ISSUE_DT":"03/06/2014","SIG_SUB":"N","PART_SECTION":"75.900-4","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"03/12/2014","PROPOSED_PENALTY":"138","AMOUNT_DUE":"138","AMOUNT_PAID":"138","CONTESTED_IND":"N","sourceDate":"2014-03-06"},{"SOURCE_ROW_NUMBER":"1118005","VIOLATION_NO":"8386766","VIOLATION_ISSUE_DT":"01/16/2014","SIG_SUB":"N","PART_SECTION":"75.1506(a)(1)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"Fatal","NO_AFFECTED":"1","NEGLIGENCE":"LowNegligence","TERMINATION_DT":"09/16/2014","PROPOSED_PENALTY":"263","AMOUNT_DUE":"263","AMOUNT_PAID":"263","CONTESTED_IND":"N","sourceDate":"2014-01-16"},{"SOURCE_ROW_NUMBER":"1118384","VIOLATION_NO":"8386435","VIOLATION_ISSUE_DT":"12/05/2013","SIG_SUB":"N","PART_SECTION":"75.364(b)(1)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"12/19/2013","PROPOSED_PENALTY":"285","AMOUNT_DUE":"285","AMOUNT_PAID":"285","CONTESTED_IND":"N","sourceDate":"2013-12-05"},{"SOURCE_ROW_NUMBER":"1118383","VIOLATION_NO":"8386434","VIOLATION_ISSUE_DT":"11/21/2013","SIG_SUB":"N","SECTION_OF_ACT":"316(b)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"12/02/2013","PROPOSED_PENALTY":"317","AMOUNT_DUE":"238","AMOUNT_PAID":"238","CONTESTED_IND":"N","sourceDate":"2013-11-21"},{"SOURCE_ROW_NUMBER":"1118382","VIOLATION_NO":"8386433","VIOLATION_ISSUE_DT":"11/21/2013","SIG_SUB":"N","PART_SECTION":"75.370(a)(1)","CIT_ORD_SAFE":"Citation","LIKELIHOOD":"Unlikely","INJ_ILLNESS":"LostDays","NO_AFFECTED":"1","NEGLIGENCE":"ModNegligence","TERMINATION_DT":"12/02/2013","PROPOSED_PENALTY":"285","AMOUNT_DUE":"285","AMOUNT_PAID":"285","CONTESTED_IND":"N","sourceDate":"2013-11-21"}]}],"safety":{"href":"/api/v1/mines/1519114/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/1519114/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":"Electrical connections or splices; suitability.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-F/section-75.514","part":"75","subchapter":"O","subpart":"F","id":"75.514","citation":"30 CFR 75.514","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","subchapterHeading":"SUBCHAPTER O—COAL MINE SAFETY AND HEALTH","partHeading":"PART 75—MANDATORY SAFETY STANDARDS—UNDERGROUND COAL MINES","subpartHeading":"","text":null,"occurrenceCount":1},{"chapter":"I","heading":"Reporting SCSR inventory and malfunctions; retention of SCSRs.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-R/section-75.1714-8","part":"75","subchapter":"O","subpart":"R","id":"75.1714-8","citation":"30 CFR 75.1714-8","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","subchapterHeading":"SUBCHAPTER O—COAL MINE SAFETY AND HEALTH","partHeading":"PART 75—MANDATORY SAFETY STANDARDS—UNDERGROUND COAL MINES","subpartHeading":"","text":null,"occurrenceCount":1},{"chapter":"I","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","citation":"30 CFR 75.364","heading":"Weekly examination.","id":"75.364","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-D/section-75.364","part":"75","partHeading":"PART 75—MANDATORY SAFETY STANDARDS—UNDERGROUND COAL MINES","subchapter":"O","subchapterHeading":"SUBCHAPTER O—COAL MINE SAFETY AND HEALTH","subpart":"D","subpartHeading":"Subpart D—Ventilation","text":"(a) Worked-out areas. (1) At least every 7 days, a certified person shall examine unsealed worked-out areas where no pillars have been recovered by traveling to the area of deepest penetration; measuring methane and oxygen concentrations and air quantities and making tests to determine if the air is moving in the proper direction in the area. The locations of measurement points where tests and measurements will be performed shall be included in the mine ventilation plan and shall be adequate in number and location to assure ventilation and air quality in the area. Air quantity measurements shall also be made where the air enters and leaves the worked-out area. An alternative method of evaluating the ventilation of the area may be approved in the ventilation plan.\n\n(2) At least every 7 days, a certified person shall evaluate the effectiveness of bleeder systems required by § 75.334 as follows:\n\n(i) Measurements of methane and oxygen concentrations and air quantity and a test to determine if the air is moving in its proper direction shall be made where air enters the worked-out area.\n\n(ii) Measurements of methane and oxygen concentrations and air quantity and a test to determine if the air is moving in the proper direction shall be made immediately before the air enters a return split of air.\n\n(iii) At least one entry of each set of bleeder entries used as part of a bleeder system under § 75.334 shall be traveled in its entirety. Measurements of methane and oxygen concentrations and air quantities and a test to determine if the air is moving in the proper direction shall be made at the measurement point locations specified in the mine ventilation plan to determine the effectiveness of the bleeder system.\n\n(iv) In lieu of the requirements of paragraphs (a)(2)(i) and (iii) of this section, an alternative method of evaluation may be specified in the ventilation plan provided the alternative method results in proper evaluation of the effectiveness of the bleeder system.\n\n(b) Hazardous conditions and violations of mandatory health or safety standards. At least every 7 days, an examination for hazardous conditions and violations of the mandatory health or safety standards referenced in paragraph (b)(8) of this section shall be made by a certified person designated by the operator at the following locations:\n\n(1) In at least one entry of each intake air course, in its entirety, so that the entire air course is traveled.\n\n(2) In at least one entry of each return air course, in its entirety, so that the entire air course is traveled.\n\n(3) In each longwall or shortwall travelway in its entirety, so that the entire travelway is traveled.\n\n(4) At each seal along return and bleeder air courses and at each seal along intake air courses not examined under § 75.360(b)(5).\n\n(5) In each escapeway so that the entire escapeway is traveled.\n\n(6) On each working section not examined under § 75.360(b)(3) during the previous 7 days.\n\n(7) At each water pump not examined during a preshift examination conducted during the previous 7 days.\n\n(8) Weekly examinations shall include examinations to identify violations of the standards listed below:\n\n(i) §§ 75.202(a) and 75.220(a)(1)—roof control;\n\n(ii) §§ 75.333(h) and 75.370(a)(1)—ventilation, methane;\n\n(iii) §§ 75.400 and 75.403—accumulations of combustible materials and application of rock dust; and\n\n(iv) § 75.1403—maintenance of off track haulage roadways, and track haulage, track switches, and other components for haulage;\n\n(v) § 75.1722(a)—guarding moving machine parts; and\n\n(vi) § 75.1731(a)—maintenance of belt conveyor components.\n\n(c) Measurements and tests. At least every 7 days, a certified person shall—\n\n(1) Determine the volume of air entering the main intakes and in each intake split;\n\n(2) Determine the volume of air and test for methane in the last open crosscut in any pair or set of developing entries or rooms, in the return of each split of air immediately before it enters the main returns, and where the air leaves the main returns; and\n\n(3) Test for methane in the return entry nearest each set of seals immediately after the air passes the seals.\n\n(d) Hazardous conditions shall be corrected immediately. If the condition creates an imminent danger, everyone except those persons referred to in section 104(c) of the Act shall be withdrawn from the area affected to a safe area until the hazardous condition is corrected. Any violation of the nine mandatory health or safety standards found during a weekly examination shall be corrected.\n\n(e) The weekly examination may be conducted at the same time as the preshift or on-shift examinations.\n\n(f) (1) The weekly examination is not required during any 7 day period in which no one enters any underground area of the mine.\n\n(2) Except for certified persons required to make examinations, no one shall enter any underground area of the mine if a weekly examination has not been completed within the previous 7 days.\n\n(g) Certification. The person making the weekly examinations shall certify by initials, date, and the time that the examination was made. Certifications and times shall appear at enough locations to show that the entire area has been examined.\n\n(h) Recordkeeping. At the completion of any shift during which a portion of a weekly examination is conducted, a record of the results of each weekly examination, including a record of hazardous conditions and violations of the nine mandatory health or safety standards found during each examination and their locations, the corrective action taken, and the results and location of air and methane measurements, shall be made. The results of methane tests shall be recorded as the percentage of methane measured by the examiner. The record shall be made by the person making the examination or a person designated by the operator. If made by a person other than the examiner, the examiner shall verify the record by initials and date by or at the end of the shift for which the examination was made. The record shall be countersigned by the mine foreman or equivalent mine official by the end of the mine foreman's or equivalent mine official's next regularly scheduled working shift. The records required by this section shall be made in a secure book that is not susceptible to alteration or electronically in a computer system so as to be secure and not susceptible to alteration.\n\n(i) Retention period. Records shall be retained at a surface location at the mine for at least 1 year and shall be made available for inspection by authorized representatives of the Secretary and the representative of miners.\n\n[61 FR 9829, Mar. 11, 1996, as amended at 77 FR 20715, Apr. 6, 2012]","occurrenceCount":2},{"chapter":"I","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","citation":"30 CFR 75.370","heading":"Mine ventilation plan; submission and approval.","id":"75.370","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-D/section-75.370","part":"75","partHeading":"PART 75—MANDATORY SAFETY STANDARDS—UNDERGROUND COAL MINES","subchapter":"O","subchapterHeading":"SUBCHAPTER O—COAL MINE SAFETY AND HEALTH","subpart":"D","subpartHeading":"Subpart D—Ventilation","text":"(a)(1) The operator shall develop and follow a ventilation plan approved by the district manager. The plan shall be designed to control methane and respirable dust and shall be suitable to the conditions and mining system at the mine. The ventilation plan shall consist of two parts, the plan content as prescribed in § 75.371 and the ventilation map with information as prescribed in § 75.372. Only that portion of the map which contains information required under § 75.371 will be subject to approval by the district manager.\n\n(2) The proposed ventilation plan and any revision to the plan shall be submitted in writing to the district manager. When revisions to a ventilation plan are proposed, only the revised pages, maps, or sketches of the plan need to be submitted. When required in writing by the district manager, the operator shall submit a fully revised plan by consolidating the plan and all revisions in an orderly manner and by deleting all outdated material.\n\n(3) (i) The mine operator shall notify the representative of miners at least 5 days prior to submission of a mine ventilation plan and any revision to a mine ventilation plan. If requested, the mine operator shall provide a copy to the representative of miners at the time of notification. In the event of a situation requiring immediate action on a plan revision, notification of the revision shall be given, and if requested, a copy of the revision shall be provided, to the representative of miners by the operator at the time of submittal;\n\n(ii) A copy of the proposed ventilation plan, and a copy of any proposed revision, submitted for approval shall be made available for inspection by the representative of miners; and\n\n(iii) A copy of the proposed ventilation plan, and a copy of any proposed revision, submitted for approval shall be posted on the mine bulletin board at the time of submittal. The proposed plan or proposed revision shall remain posted until it is approved, withdrawn or denied.\n\n(b) Following receipt of the proposed plan or proposed revision, the representative of miners may submit timely comments to the district manager, in writing, for consideration during the review process. A copy of these comments shall also be provided to the operator by the district manager upon request.\n\n(c) (1) The district manager will notify the operator in writing of the approval or denial of approval of a proposed ventilation plan or proposed revision. A copy of this notification will be sent to the representative of miners by the district manager.\n\n(2) If the district manager denies approval of a proposed plan or revision, the deficiencies of the plan or revision shall be specified in writing and the operator will be provided an opportunity to discuss the deficiencies with the district manager.\n\n(d) No proposed ventilation plan shall be implemented before it is approved by the district manager. Any intentional change to the ventilation system that alters the main air current or any split of the main air current in a manner that could materially affect the safety and health of the miners, or any change to the information required in § 75.371 shall be submitted to and approved by the district manager before implementation.\n\n(e) Before implementing an approved ventilation plan or a revision to a ventilation plan, persons affected by the revision shall be instructed by the operator in its provisions.\n\n(f) The approved ventilation plan and any revisions shall be—\n\n(1) Provided upon request to the representative of miners by the operator following notification of approval;\n\n(2) Made available for inspection by the representative of miners; and\n\n(3) Posted on the mine bulletin board within 1 working day following notification of approval. The approved plan and revisions shall remain posted on the bulletin board for the period that they are in effect.\n\n(g) The ventilation plan for each mine shall be reviewed every 6 months by an authorized representative of the Secretary to assure that it is suitable to current conditions in the mine.","occurrenceCount":2},{"chapter":"I","heading":"Installation of main mine fans.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-D/section-75.310","part":"75","subchapter":"O","subpart":"D","id":"75.310","citation":"30 CFR 75.310","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","subchapterHeading":"SUBCHAPTER O—COAL MINE SAFETY AND HEALTH","partHeading":"PART 75—MANDATORY SAFETY STANDARDS—UNDERGROUND COAL MINES","subpartHeading":"","text":null,"occurrenceCount":1},{"chapter":"I","heading":"Testing, examination, and maintenance of circuit breakers; record.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-J/section-75.900-4","part":"75","subchapter":"O","subpart":"J","id":"75.900-4","citation":"30 CFR 75.900-4","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","subchapterHeading":"SUBCHAPTER O—COAL MINE SAFETY AND HEALTH","partHeading":"PART 75—MANDATORY SAFETY STANDARDS—UNDERGROUND COAL MINES","subpartHeading":"","text":null,"occurrenceCount":1},{"chapter":"I","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","citation":"30 CFR 75.1506","heading":"Refuge alternatives.","id":"75.1506","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-P/section-75.1506","part":"75","partHeading":"PART 75—MANDATORY SAFETY STANDARDS—UNDERGROUND COAL MINES","subchapter":"O","subchapterHeading":"SUBCHAPTER O—COAL MINE SAFETY AND HEALTH","subpart":"P","subpartHeading":"Subpart P—Mine Emergencies","text":"(a) Each operator shall provide refuge alternatives and components as follows:\n\n(1) Prefabricated self-contained units, including the structural, breathable air, air monitoring, and harmful gas removal components of the unit, shall be approved under 30 CFR part 7; and\n\n(2) The structural components of units consisting of 15 psi stoppings constructed prior to an event shall be approved by the District Manager, and the breathable air, air monitoring, and harmful gas removal components of these units shall be approved under 30 CFR part 7.\n\n(3) Prefabricated refuge alternative structures that states have approved and those that MSHA has accepted in approved Emergency Response Plans (ERPs) that are in service prior to March 2, 2009 are permitted until December 31, 2018, or until replaced, whichever comes first. Breathable air, air-monitoring, and harmful gas removal components of either a prefabricated self-contained unit or a unit consisting of 15 psi stoppings constructed prior to an event in a secure space and an isolated atmosphere that states have approved and those that MSHA has accepted in approved ERPs that are in use prior to March 2, 2009 are permitted until December 31, 2013, or until replaced, whichever comes first. Refuge alternatives consisting of materials pre-positioned for miners to deploy in a secure space with an isolated atmosphere that MSHA has accepted in approved ERPs that are in use prior to March 2, 2009 are permitted until December 31, 2010, or until replaced, whichever comes first.\n\n(b) Except as permitted under paragraph (a)(3) of this section, each operator shall provide refuge alternatives with sufficient capacity to accommodate all persons working underground.\n\n(1) Refuge alternatives shall provide at least 15 square feet of floor space per person and 30 to 60 cubic feet of volume per person according to the following chart. The airlock can be included in the space and volume if waste is disposed outside the refuge alternative.\n\nMining height (inches) Unrestricted volume(cubic feet) per person* 36 or less 30 >36-≤42 37.5 >42-≤48 45 >48-≤54 52.5 >54 60 * Includes an adjustment of 12 inches for clearances.\n\n(2) Refuge alternatives for working sections shall accommodate the maximum number of persons that can be expected on or near the section at any time.\n\n(3) Each refuge alternative for outby areas shall accommodate persons reasonably expected to use it.\n\n(c) Refuge alternatives shall be provided at the following locations:\n\n(1) Within 1,000 feet from the nearest working face and from locations where mechanized mining equipment is being installed or removed except that for underground anthracite coal mines that have no electrical face equipment, refuge alternatives shall be provided if the nearest working face is greater than 2,000 feet from the surface.\n\n(2) Spaced within one-hour travel distances in outby areas where persons work such that persons in outby areas are never more than a 30-minute travel distance from a refuge alternative or safe exit. However, the operator may request and the District Manager may approve a different location in the ERP. The operator's request shall be based on an assessment of the risk to persons in outby areas, considering the following factors: proximity to seals; proximity to potential fire or ignition sources; conditions in the outby areas; location of stored SCSRs; and proximity to the most direct, safe, and practical route to an intake escapeway.\n\n(d) Roof and rib support for refuge alternative locations shall be specified in the mine's roof control plan.\n\n(e) The operator shall protect the refuge alternative and contents from damage during transportation, installation, and storage.\n\n(f) A refuge alternative shall be removed from service if examination reveals damage that interferes with the functioning of the refuge alternative or any component.\n\n(1) If a refuge alternative is removed from service, the operator shall withdraw all persons from the area serviced by the refuge alternative, except those persons referred to in § 104(c) of the Mine Act.\n\n(2) Refuge alternative components removed from service shall be replaced or be repaired for return to service in accordance with the manufacturer's specifications.\n\n(g) At all times, the site and area around the refuge alternative shall be kept clear of machinery, materials, and obstructions that could interfere with the deployment or use of the refuge alternative.\n\n(h) Each refuge alternative shall be conspicuously identified with a sign or marker as follows:\n\n(1) A sign or marker made of a reflective material with the word “REFUGE” shall be posted conspicuously at each refuge alternative.\n\n(2) Directional signs made of a reflective material shall be posted leading to each refuge alternative location.\n\n(i) During use of the refuge alternative, the atmosphere within the refuge alternative shall be monitored. Changes or adjustments shall be made to reduce the concentration of methane to less than 1 percent; to reduce the concentration of carbon dioxide to 1 percent or less and excursions not exceeding 2.5 percent; and to reduce the concentration of carbon monoxide to 25 ppm or less. Oxygen shall be maintained at 18.5 to 23 percent.\n\n(j) Refuge alternatives shall contain a fire extinguisher that—\n\n(1) Meets the requirements for portable fire extinguishers used in underground coal mines under this part;\n\n(2) Is appropriate for extinguishing fires involving the chemicals used for harmful gas removal; and\n\n(3) Uses a low-toxicity extinguishing agent that does not produce a hazardous by-product when activated.\n\n[73 FR 80698, Dec. 31, 2008]","occurrenceCount":1}],"fullCorpus":"/data/title30-sections.json"}}},"meta":{"representation":"json","mineId":"1519114","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804}}