{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-13T11:26:59.401Z","identity":{"mine_id":"4609108","name":"Mammoth #2 Gas","status":"Abandoned","status_date":"2014-03-26","mine_type":"Underground","coal_metal":"C","commodity":"Coal (Bituminous)","state":"WV","county":"Kanawha","nearest_town":"Shrewsbury","operator_id":"P23835","operator_name":"Mammoth Coal Co.","controller_id":"0127321","controller_name":"Alpha Metallurgical Resources Inc","district":"C04","office":"Mt. 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rates","equipment patterns","peer denominators"],"rowCount":128,"firstDate":"2005-09-08","lastDate":"2013-06-14","metrics":{"daysLost":698,"injuries":28,"fatalities":0,"recentRows":0,"restrictedDays":0,"contractorRecords":0},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"72686","DOCUMENT_NO":"220131710006","ACCIDENT_DT":"06/14/2013","DEGREE_INJURY":"ACCIDENT ONLY","CLASSIFICATION":"FALL OF ROOF OR BACK","ACCIDENT_TYPE":"Accident type, without injuries","OCCUPATION":"NO VALUE FOUND","NO_INJURIES":"0","DAYS_LOST":"0","NARRATIVE":"An unplanned roof occurred in the intake air-course/intake escape way one crosscut from spad #44. The fall is the entire width of the entry. Height - unknown. There were no injuries or entrapment. Blocked primary escape way but escape way has been rerouted.","sourceDate":"2013-06-14"},{"SOURCE_ROW_NUMBER":"270640","DOCUMENT_NO":"220131650001","ACCIDENT_DT":"06/11/2013","DEGREE_INJURY":"ACCIDENT ONLY","CLASSIFICATION":"FALL OF ROOF OR BACK","ACCIDENT_TYPE":"Accident type, without injuries","OCCUPATION":"NO VALUE FOUND","NO_INJURIES":"0","DAYS_LOST":"0","NARRATIVE":"An unplanned roof fall occurred, there were no injuries or entrapment. The location of the fall was in the return airway at the #11 & #12 northeast main seals. The #11 seal was completely blocked. The measurements of the fall were approx. 18' wide, 14' high at a length of 60'.","sourceDate":"2013-06-11"},{"SOURCE_ROW_NUMBER":"46990","DOCUMENT_NO":"220123400002","ACCIDENT_DT":"12/03/2012","DEGREE_INJURY":"ACCIDENT ONLY","CLASSIFICATION":"FALL OF ROOF OR BACK","ACCIDENT_TYPE":"Accident type, without injuries","OCCUPATION":"NO VALUE FOUND","NO_INJURIES":"0","DAYS_LOST":"0","NARRATIVE":"Unplanned roof fall occurred outby Spad #1118 and one crosscut outby #1 seal. Fall was approximately 35 feet long X 19 feet wide X14 to 16 feet in height. Unplanned fall occurred in the number 7 entry. No injuries or entrapment involved. No escape way, ventilation, walkway, or  equipment involved. The unplanned roof fall was on northeast mains.","sourceDate":"2012-12-03"},{"SOURCE_ROW_NUMBER":"236339","DOCUMENT_NO":"220122890013","ACCIDENT_DT":"10/09/2012","DEGREE_INJURY":"ACCIDENT ONLY","CLASSIFICATION":"FALL OF ROOF OR BACK","ACCIDENT_TYPE":"Accident type, without injuries","OCCUPATION":"NO VALUE FOUND","NO_INJURIES":"0","DAYS_LOST":"0","NARRATIVE":"Unplanned roof fall occurred #7 entry at Spad 2121 and extending inby 1 crosscut. Fall was approx. 19' W. x 80' L. x 10' H. No injuries, entrapment or Eq. involved. No escape way, ventilation or travel way affected.","sourceDate":"2012-10-09"},{"SOURCE_ROW_NUMBER":"262199","DOCUMENT_NO":"220121420017","ACCIDENT_DT":"05/10/2012","DEGREE_INJURY":"NO DYS AWY FRM WRK,NO RSTR ACT","CLASSIFICATION":"HANDLING OF MATERIALS","ACCIDENT_TYPE":"Struck by... NEC","OCCUPATION":"Beltman, Conveyor man,  Conveyor belt worker, Mobile bridge carrierman, Feeder operator, Conveyor rider","NO_INJURIES":"1","DAYS_LOST":"0","NARRATIVE":"Employee was standing in intersection watching a continuous miner water line being pulled through a hole in bottom of a stopping. The end of the water line at a coupling caught. The water hose suddenly became free and struck the employee on the left lower leg.","sourceDate":"2012-05-10"},{"SOURCE_ROW_NUMBER":"184671","DOCUMENT_NO":"220121080005","ACCIDENT_DT":"04/16/2012","DEGREE_INJURY":"ACCIDENT ONLY","CLASSIFICATION":"FALL OF ROOF OR BACK","ACCIDENT_TYPE":"Accident type, without injuries","OCCUPATION":"NO VALUE FOUND","NO_INJURIES":"0","DAYS_LOST":"0","NARRATIVE":"Unplanned roof fall occurred at bottom of slope #4 entry at spad #206 track entry. The fall was approximately 30 ft. long x 18-19 ft. wide x 15 ft. high. No injuries or entrapment or equipment involved. No ventilation involved. Secondary escapeway blocked and it was changed around the fall.","sourceDate":"2012-04-16"},{"SOURCE_ROW_NUMBER":"274897","DOCUMENT_NO":"220120390006","ACCIDENT_DT":"02/06/2012","DEGREE_INJURY":"ACCIDENT ONLY","CLASSIFICATION":"FALL OF ROOF OR BACK","ACCIDENT_TYPE":"Accident type, without injuries","OCCUPATION":"NO VALUE FOUND","NO_INJURIES":"0","DAYS_LOST":"0","NARRATIVE":"An unplanned roof fall was discovered 3A Belt Intake at spad 1127. Fall was approximately 80 ft. length x 20 ft. wide x 8 ft. height. No injuries or entrapment was involved. No ventilation, escapeway or travelway involved. Area was developed 10/22/08. Fall was 3800 ft. from section.","sourceDate":"2012-02-06"},{"SOURCE_ROW_NUMBER":"128482","DOCUMENT_NO":"220120390005","ACCIDENT_DT":"02/06/2012","DEGREE_INJURY":"ACCIDENT ONLY","CLASSIFICATION":"FALL OF ROOF OR BACK","ACCIDENT_TYPE":"Accident type, without injuries","OCCUPATION":"NO VALUE FOUND","NO_INJURIES":"0","DAYS_LOST":"0","NARRATIVE":"Unplanned roof fall occurred #1 entry at spad 1108. Fall was approximately 150 ft. length x 18 ft. wide x 10 ft. height. No injuries, entrapment or equipment involved. No escapeway or travelway involved. Ventilation partially blocked in return. Area was developed 02/17/09. Fall was 3600 ft. from face.","sourceDate":"2012-02-06"},{"SOURCE_ROW_NUMBER":"128481","DOCUMENT_NO":"220120390004","ACCIDENT_DT":"02/06/2012","DEGREE_INJURY":"ACCIDENT ONLY","CLASSIFICATION":"FALL OF ROOF OR BACK","ACCIDENT_TYPE":"Accident type, without injuries","OCCUPATION":"NO VALUE FOUND","NO_INJURIES":"0","DAYS_LOST":"0","NARRATIVE":"Unplanned roof fall occurred #6 Belt Intake at spad #1423. Fall was approximately 100 ft. length x 20 ft. wide x 8 ft. height. No injuries, entrapment or equipment involved. No ventilation, escapeway, or travelway involved. Area was developed 11-30-09. Fall was 4600 ft. from face.","sourceDate":"2012-02-06"},{"SOURCE_ROW_NUMBER":"137228","DOCUMENT_NO":"220113490006","ACCIDENT_DT":"12/14/2011","DEGREE_INJURY":"ACCIDENT ONLY","CLASSIFICATION":"FALL OF ROOF OR BACK","ACCIDENT_TYPE":"Accident type, without injuries","OCCUPATION":"NO VALUE FOUND","NO_INJURIES":"0","DAYS_LOST":"0","NARRATIVE":"Unplanned roof fall occurred at #10 c.c. on the #3 belt the c.c. to the right at spad #241 between entries #2 and #3 it is approx. 40' long, 8 to 10' high and 8' - 10' thick. No injuries or entrapment involved. However it did fall on a diesel forklift. No ventilation or travel way involved.","sourceDate":"2011-12-14"},{"SOURCE_ROW_NUMBER":"266381","DOCUMENT_NO":"220113260040","ACCIDENT_DT":"11/17/2011","DEGREE_INJURY":"ACCIDENT ONLY","CLASSIFICATION":"FALL OF ROOF OR BACK","ACCIDENT_TYPE":"Accident type, without injuries","OCCUPATION":"NO VALUE FOUND","NO_INJURIES":"0","DAYS_LOST":"0","NARRATIVE":"Unplanned roof fall occurred break #13 #6 entry - in old #6 belt panel. Inby spad 1750. Approximately 20 ft wide X 20 ft long X 18 ft high. No injuries or entrapment involved. No ventilation, equipment, escapeway or travelway involved.","sourceDate":"2011-11-17"},{"SOURCE_ROW_NUMBER":"167470","DOCUMENT_NO":"220113180080","ACCIDENT_DT":"11/09/2011","DEGREE_INJURY":"DAYS AWAY FROM WORK ONLY","CLASSIFICATION":"SLIP OR FALL OF PERSON","ACCIDENT_TYPE":"Over-exertion NEC","OCCUPATION":"Laborer, Bull gang,  Parts runner, Roustabout, Roof trimmer/scaler","NO_INJURIES":"1","DAYS_LOST":"5","NARRATIVE":"Employee stated that he stepped down from conveyor belt line and his knee twisted sideways. Nothing on mine floor at the area, he stated his knee just went sideways. He continued to work however pain continued and he ceased work.","sourceDate":"2011-11-09"}]},{"id":"msha-addresses","name":"Addresses of Record","domains":["identity","logistics"],"products":["entity resolution","address history","facility geocoding"],"rowCount":1,"firstDate":"2014-03-26","lastDate":"2014-03-26","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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(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":1},{"chapter":"I","heading":"Mine map.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-M/section-75.1200","part":"75","subchapter":"O","subpart":"M","id":"75.1200","citation":"30 CFR 75.1200","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":"Temporary notations, revisions, and supplements.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-M/section-75.1202-1","part":"75","subchapter":"O","subpart":"M","id":"75.1202-1","citation":"30 CFR 75.1202-1","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":"Diesel equipment inventory.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-72/subpart-D/section-72.520","part":"72","subchapter":"O","subpart":"D","id":"72.520","citation":"30 CFR 72.520","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","subchapterHeading":"SUBCHAPTER O—COAL MINE SAFETY AND HEALTH","partHeading":"PART 72—HEALTH STANDARDS FOR COAL MINES","subpartHeading":"","text":null,"occurrenceCount":1},{"chapter":"I","heading":"Actions for excessive methane.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-D/section-75.323","part":"75","subchapter":"O","subpart":"D","id":"75.323","citation":"30 CFR 75.323","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":"Mine emergency evacuation training and drills.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-75/subpart-P/section-75.1504","part":"75","subchapter":"O","subpart":"P","id":"75.1504","citation":"30 CFR 75.1504","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":"Records of training.","officialUrl":"https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-48/subpart-A/section-48.9","part":"48","subchapter":"H","subpart":"A","id":"48.9","citation":"30 CFR 48.9","chapterHeading":"CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR","subchapterHeading":"SUBCHAPTER H—EDUCATION AND TRAINING","partHeading":"PART 48—TRAINING AND RETRAINING OF MINERS","subpartHeading":"","text":null,"occurrenceCount":1}],"fullCorpus":"/data/title30-sections.json"}}},"meta":{"representation":"json","mineId":"4609108","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804}}