Handbook for Methane Control in Mining - AMMSA

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165OML [1996]. Health and safety guidelines, draft #4. Sudbury Ontario, Canada: Ontario Ministryof Labour.Ontario Occupational Health and Safety Act [1990]. Revised regulations of Ontario (R.R.O.)1990, regulation 854, mines and mining plants. Part II, fire protection. Section 35. [http://www.e-laws.gov.on.ca/DBLaws/Regs/English/900854_e.htm#BK3]. Date accessed: February2006.Plimpton HG, Foster RK, Risbeck JS, Rutherford RP, King RF, Buffington GL, et al. [1979].Final report of mine explosion disaster, Belle Isle mine, Cargill, Inc., Franklin, St. Mary Parish,Louisiana, June 8, 1979. Arlington, VA: U.S. Department of Labor, Mine Safety and HealthAdministration.Schatzel SJ, Hyman DM [1984]. Methane content of Gulf Coast domal rock salt. Pittsburgh,PA: U.S. Department of the Interior, Bureau of Mines, RI 8889. NTIS No. PB85109593.Searra JA [1990]. Gas-related problems in the Witwatersrand supergroup [Thesis]. Johannesburg,Republic of South Africa: University of the Witwatersrand.Sherwood B, Fritz P, Frape SK, Macko SA, Weise SM, Welhan JA [1988]. Methane occurrencesin the Canadian shield. Chem Geol 71(1–3):223–236.Thimons ED, Vinson RP, Kissell FN [1979]. Forecasting methane hazards in metal and nonmetalmines. Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 8392. NTISNo. PB80100696.Westfield J, Knill LD, Moschetti AC [1963]. Final report of major mine explosion disaster,Cane Creek mine, Potash Division, Texas Gulf Sulphur Company, Grand County, Utah,August 27, 1963. Washington, DC: U.S. Department of the Interior, Bureau of Mines.
166APPENDIX A.—ONTARIO OCCUPATIONAL HEALTH AND SAFETY ACTR.R.O. 22 1990, REGULATION 854MINES AND MINING PLANTS, SECTION 3535. (1) If a flow of flammable gas is encountered in a mine or in an enclosed building housing adiamond drill on the surface and the concentration of the flammable gas is unknown 23 ,(a) all sources of ignition in the affected area shall be eliminated;(b) all electrical equipment in the affected area shall be de-energized;(c) the affected area shall be evacuated;(d) precautions shall be taken to prevent persons from entering the affected area inadvertently;(e) a supervisor shall be notified;(f) the affected area shall be tested by a competent person; and(g) the affected area shall be designated as a fire hazard area. O. Reg. 24 236/99, s. 3.(2) Subject to subsections (3), (4) and (5), work may resume if the concentration of flammablegas is below 1.0 per cent. O. Reg. 236/99, s. 3.(3) If the concentration is less than 0.25 per cent and the affected area is tested periodically toensure that the level of concentration is known, no precautions are required. O. Reg. 236/99,s. 3.(4) If the concentration is 0.25 per cent or greater but not more than 0.5 per cent, all of thefollowing precautions shall be taken:1. The supervisor shall provide written instructions of any special precautions.2. The instructions, if any, shall be communicated to the workers.3. The affected area shall be designated as a fire hazard area.4. The affected area shall be tested at least once per shift before work begins and, again,on release of any further flow of gas.5. A flammable gas detector shall remain in the affected area for the purpose of continuedtesting. O. Reg. 236/99, s. 3.22 Revised Regulations of Ontario (Canada).23 Emphasis ours.24 “O. Reg.” stands for Ontario Regulation.
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TMIC 9486Information Circular/2006H
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ORDERING INFORMATIONCopies of Natio
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ILLUSTRATIONS—ContinuedPage4-6. U
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HANDBOOK FOR METHANE CONTROL IN MIN
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4Below 5%, called the lower explosi
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6reduced pressure, except at very l
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8Static electricity. Protection aga
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10Figure 1-4.—Estimated methane c
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12LAYERING OF METHANE AT THE MINE R
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14good eyesight. 24methane level.Ot
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16a material balance indicated that
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18As an example, assume that themet
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20Figure 1-10.—Relative frequency
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22Davies AW, Isaac AK, Cook PM [200
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24Margerson SNA, Robinson H, Wilkin
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CHAPTER 2.—SAMPLING FOR METHANE I
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29USING PORTABLE METHANE DETECTORST
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Out-of-range gas concentrations in
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Figure 2-3.—Recorder chart from a
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35Industrial Scientific Corp. [2004
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38peaks, not the overallmethane lev
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40hung on J-hook assemblies, which
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42Methane dilution effectiveness.Th
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44found that effective scrubber ope
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46When the scrubber exhaust is not
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48Methane monitors are usually moun
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50to use radial bits instead of con
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52Mott ML, Chuhta EJ [1991]. Face v
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54Service, Centers for Disease Cont
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56Methane accumulationsaround thesh
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58corner and by 43% at supportNo. 4
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60When using water sprays to reduce
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62Cecala AB, Zimmer JA, Thimons ED
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64DESIGNING BLEEDER SYSTEMSAs part
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66Caved area characteristics. The c
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68then move this gas into the activ
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70perform tests to determine whethe
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72A major purpose of the bleeder sy
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74• Inlets to the pillared area n
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76REFERENCESCFR. Code of federal re
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78Methane is released into each min
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80Figure 6-1.—Gas content of coal
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82Figure 6-3.—Simplified illustra
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842. In-mine inclined or vertical b
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861. Packed cavity method and its v
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88Table 6-3.—Methane capture rati
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90Early experiences with this metho
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9211. At the surface installation (
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94• Estimated cost for moderately
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96Thakur PC [1981]. Methane control
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98Anomalous, unanticipated methane
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100Vertical methane drainage boreho
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102Figure 7-2 shows a mine entry ap
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104obvious solution to this problem
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106Figure 7-8.—Hypothetical gas c
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108Lama and Bodziony [1998] compile
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110In-mine methane drainage systems
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112Iannacchione AT, Ulery JP, Hyman
Page 119 and 120: 114More sophisticated reservoir eng
Page 121 and 122: 116coal lithotype on gas content is
Page 123 and 124: 118FORECASTING REMAINING GAS-IN-PLA
Page 125 and 126: 120⎛ y⎞⎜⎛⎞ ⎛ ⎞= ⎜
Page 127 and 128: 122emissions. The geometry and size
Page 129 and 130: 124Reservoir models require a subst
Page 131 and 132: 126King GR, Ertekin T [1989a]. A su
Page 133 and 134: 128an area of 314 ft 2 would requir
Page 135 and 136: 130In the case of the abovementione
Page 137 and 138: 132FILLING SHAFTS AT CLOSED MINESFi
Page 139 and 140: 134Hinderfeld G [1995]. Ventilation
Page 141 and 142: 136To calculate the effectiveinert,
Page 143 and 144: 138exhaust. The remaining diesel ex
Page 145 and 146: 140required only 4 min. As a result
Page 147 and 148: 142Figure 11-1.—Desorption test a
Page 149 and 150: 144enclosed in a tunnel-like struct
Page 151 and 152: 146Kolada RJ [1985]. Investigation
Page 153 and 154: 148air in a 6-ft by 9-ft by 6.5-ft
Page 155 and 156: 150represents flammable mixtures. F
Page 157 and 158: 152• In Eastern Europe, petroleum
Page 159 and 160: 154Category II applies to domal sal
Page 161 and 162: 1562. Monitoring for gas and taking
Page 163 and 164: 158These mines typically have large
Page 165 and 166: 160Dave Graham is the safety and he
Page 167 and 168: 162Figure 13-2.—Examples of metha
Page 169: 164REFERENCESAndrews JN [1987]. Nob
Page 174 and 175: 169CHAPTER 14.—PREVENTING METHANE
Page 176 and 177: Ways to confirm the presence of gas
Page 178 and 179: 173The tunnel face is usually venti
Page 180 and 181: 175Figure 14-5.—TBM ventilation s
Page 182 and 183: face. While one of these elements a
Page 184 and 185: 179ELIMINATING IGNITION SOURCESElec
Page 186 and 187: 181INDEXAAbnormally gassy faces....
Page 188 and 189: 183NNatural ventilation, coal silos
Page 190 and 191: Delivering on the Nation’s Promis
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