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(Click for frequent words.) 70 volcanic ash 59 ash clouds 59 Recriminations erupt 58 Volcano spews 58 Philippine volcano spews 58 soot 57 ash cloud 57 erupting Iceland volcano 56 volcanic dust 56 volcano spewed clouds 56 volcanic plume 56 ash byproduct 55 ashfall 55 ash spewing 55 volcanic ashes 55 Volcanic ash 55 ash plume 55 Eyjafjoell volcano 55 rubbish digger 54 ash plumes 54 ash spewed 54 ash sludge 54 Indonesian volcano spews 54 Grimsvötn 54 particulate matter 53 spews ash 53 Yemen spewing lava 53 Iceland Grimsvoetn volcano 53 sulfur dioxide 53 plume 53 erupting Icelandic volcano 52 ash slurry 52 Despite Mount Bulusan 52 particulates 52 volcano ash 52 Mount Merapi spews 52 Eyjafjallajokul volcano 52 belched clouds 52 Iceland Eyjafjallajökull volcano 52 near blackened hillsides 52 airborne particulates 51 Iceland Eyjafjallajoekull volcano 51 grayish ash 51 fly ash 51 sulfuric dioxide 51 Iceland Eyjafjallajokull volcano 51 Redoubt Volcano 51 lava 51 Grimsvoetn volcano 50 Giltnane 50 volcano 50 ash billowing 50 Eyjafjoell 50 spewed ash 50 volcanic 50 volcanic debris 50 Eyjafjallajökull volcano 50 volcanic ash cloud 50 raining ash 50 Icelandic volcano drifted 50 sludge 50 combustion byproducts 49 Eyjafjallajokull Volcano 49 debris 49 Grímsvötn 49 particulate 49 pyroclastic material 49 Indonesia volcano spews 49 Grímsvötn volcano 49 PM# particles 49 airborne particulate matter 48 pyroclastic flow 48 soot particles 48 toxic gasses 48 spew lava 48 Sulfur dioxide 48 melted glacial 48 molten rocks 48 Grimsvotn 48 Mount Bulusan 48 volcano spewed lava 48 Icelandic volcanic ash 48 spewing ash 47 Grimsvotn GREEMSH votn volcano 47 erupting lava 47 sulfurous gases 47 Veniaminof 47 spewing volcano 47 volcanic ash clouds 47 pyroclastic surges 47 cenospheres 47 Eyjafjallajökull eruption 47 volcano spewed ash 47 Francendese 47 spews lava 47 radioactive particles 47 Iceland Eyjafjoell volcano 47 spitting lava 47 pyroclastic flows 47 sawdust 47 volcano spews 47 Sulphur dioxide 47 sulfur gases 47 spontaneously ignite 47 coal ash 47 Eyjafjallajokull volcano 46 Icelandic volcano spitting 46 Dense smoke 46 ash spews 46 volcano Eyjafjallajökull 46 volcanic ash spewed 46 noxious gasses 46 Geophysicist Steinunn Jakobsdottir 46 beryllium dust 46 Towering clouds 46 blast furnace slag 46 eruption Redoubt sent 46 erupt explosively 46 mercury 46 Iceland erupting volcano 46 glacial silt 46 radioactive tailings 46 poisonous gasses 46 dust 46 acrid fumes 46 volcanic ash drifting 46 mercury emitted 46 silicate particles 46 Alaska volcano erupts 46 Bulusan volcano 46 silica dust 46 Indonesian volcano erupts 46 Iceland volcano Eyjafjallajokull 46 Berastagi district 46 ash eruptions 46 volcano Eyjafjallajokull 46 Grimsvötn volcano 46 Hvolsvollur Iceland 46 billowing plume 46 silt 46 vapor 46 fine particulate matter 46 smoke 46 Mount Merapi spewed 45 plumes 45 smoke plumes 45 flyash 45 harmful vapors 45 pumice 45 tremolite asbestos 45 sulfuric acid mist 45 ash impoundments 45 sulfur trioxide 45 attracting vermin 45 Merapi volcano 45 radioactive 45 Eyjafjallajökull glacier 45 creosote 45 Laki volcano spewed 45 woodsmoke 45 airborne pollutants 45 sooty particles 45 hazardous waste 45 Icelandic volcano Eyjafjallajökull 45 toxic gases 45 Blowing dust 45 midweek redirecting 45 vog 45 embers 45 venting steam 45 outgas 45 fine particulates 45 volcanic ash emanating 45 Pacaya volcano 45 volcano spews lava 45 Sicily Mount Etna 45 lava oozed 45 volcanic activity 44 hydrocarbon vapors 44 volcano crater 44 solvent vapors 44 cementitious materials 44 pollutants emitted 44 radioactivity 44 spew ash 44 Mayon slopes 44 Legazpi Albay 44 insolubles 44 Grimsvotn volcano 44 acrid black 44 Icelandic volcano 44 acrid smoke 44 powdery snow 44 slurry 44 Particulate matter 44 flaming embers 44 Mount Redoubt 44 fine particle pollution 44 atmospheric moisture 44 Mount Soputan 44 aluminum dross 44 volcano spewed 44 Lava flows 44 Thick smoke 44 Icelandic meteorological 44 pyroclastic 44 turbid water 44 portland cement 44 Icelandic volcanic 44 Eyjafjallajökull erupted 44 Mount Redoubt volcano 44 particulate pollutants 44 volcanic haze 44 Eyjafjallajokull eruption 44 Eyjafjallajökull 44 volcanic eruption 44 ozone pollution 44 pollutants 44 blackened shards 44 unlined landfill 44 Radioactive particles 44 friable asbestos 44 Vogfjord 44 belching steam 44 Iceland volcanic ash 44 sediment 44 asbestos fibers 44 Scientists Iceland Grimsvotn 44 SO2 44 eruptive phase 44 Eyjafjallajokull 44 Muntilan Indonesia Thursday 44 carcinogenic fibers 44 sulfurated hydrogen 44 volcanic ash originating 44 smoke belched 43 eruption 43 polyaromatic hydrocarbons 43 Molten lava 43 toxic fumes 43 Iceland Eyjafjallajökull 43 unseasoned wood 43 glowing lava 43 Kamoamoa eruption 43 rotting vegetation 43 Alaska Mount Redoubt 43 coarse particles 43 lava cascading 43 sulfur 43 Etna eruption 43 sulphate particles 43 Radioactive waste 43 tetrachloroethene PCE 43 creosote soaked 43 Waythomas 43 towering geyser 43 lava fountains 43 ammonia vapors 43 lava spewed 43 kiln dust 43 geologist Jennifer Adleman 43 toxaphene 43 powdery dust 43 Iceland volcano shuts 43 scoria 43 Pyroclastic flows 43 Mount Karangetang 43 particulate pollution 43 sulfur dioxide SO2 43 Redoubt blew 43 Halemaumau crater 43 Ecuador Tungurahua volcano 43 combustion gases 43 pine pollen 43 Barry Grommett spokesman 43 toxic dioxins 43 Thick plumes 43 volcanologist Agus Budianto 43 Grimsvotn eruption 43 radioactive radium 43 ash ponds 43 Grimsvoetn 43 toxic vapors 43 Mayon crater 43 sulfur coals 43 Iceland volcano disrupts 43 cyclohexane 43 Icelandic volcanic eruption 43 airborne particulate 43 radioactive material 43 gob piles 43 toxic pollutants 43 sulfur dioxide emissions 43 sulfur dioxide pollution 43 Particulate pollution 43 TCE vapors 43 volcano ash cloud 43 fine particulate pollution 43 Thick clouds 43 Chile Chaiten volcano 43 Colima volcano 43 ash cloud drifted 42 scrubber sludge 42 Particulates 42 Towering plumes 42 volcano eruptions 42 spewed lava 42 volcano eruption 42 searing clouds 42 bentonite clay 42 harmful gases 42 Particle pollution 42 noxious gases 42 Daniel Hoeltgen spokesman 42 sulfuric smell 42 smelly fumes 42 Soot 42 leaching toxins 42 foul smelling sludge 42 Kinahrejo Yogyakarta Indonesia 42 decaying algae 42 sooty 42 hydromulch 42 unstable lava dome 42 pollen particles 42 toxic algal bloom 42 acrid smoke billowing 42 calorific values 42 amphibole asbestos 42 foul smelling gases 42 Saharan dust 42 krypton gas 42 Iceland spewing 42 airspace closures 42 Billowing clouds 42 abrasive volcanic ash 42 PM#.# particles 42 volcanic eruptions 42 SO2 emissions 42 Burning embers 42 Iceland volcano 42 mercury vapors 42 spewing plumes 42 juglone 42 wood chips 42 tailings 42 upper elevations 42 ashfall advisory 42 clouds billowing 42 gypsum byproduct 42 drifting southwards 42 PM#s 42 pentachlorophenol 42 Merapi Kearns 42 red sludge 42 volcanic ash drifts 42 Icelandic ash cloud 42 Gendol River 42 abrasive particles 42 ozone particulate matter 42 decaying vegetation 42 poisonous fumes 42 calcium carbonates 42 sodium hydrosulfite 42 Particulate 42 erupting Mount Merapi 42 yer kuhl volcano 42 oxidized mercury 42 smokestack 42 volcanic rock 42 reroutes trans Atlantic 42 Contaminated groundwater 42 smokestack pollutants 42 gases emitted 42 Nitrogen oxides 42 microscopic soot 42 volcanic gases 42 brownish haze 42 lava flows 42 pollen 42 unburnt 42 basaltic lava 42 ashy 42 dust particles 42 radioactive substances 42 aerosol particles 42 woody debris 42 Eyjafjallajoekull 42 Soufriere Hills 42 Dense clouds 42 acrid scent 42 respirable 42 sticky sap 42 Shiveluch eruption 42 radioactive waste 42 Montserrat volcano 42 volcanic lava 42 torrefied wood 41 Icelandic eruption 41 fine particulate 41 Game McGimsey 41 volcanic ash plume 41 noxious haze 41 fungus spores 41 carbon dioxide 41 eruptive activity 41 St. Helens belched 41 particle concentrations 41 toxic hydrogen sulfide 41 carcinogenic benzene 41 fiery lava 41 smoldering ashes 41 dredged sediment 41 SO2 sulfur dioxide 41 sulfur dioxide nitrogen dioxide 41 Philippines Mayon volcano 41 birch maple 41 Argomulyo Yogyakarta Indonesia 41 clouds obscuring 41 smog haze 41 fecal pellets 41 crushed eggshells 41 Gunnar Gudmundsson geophysicist 41 sulfuric 41 hazardous vapors 41 crystalline silica 41 volcanic mudflows 41 mudflows 41 sulfur dioxide nitrogen oxides 41 toxic pollutant 41 pigeon feces 41 phosphogypsum 41 Nitrogen dioxide 41 carbon monoxide sulfur dioxide 41 molten metal 41 calcium sulfate component 41 combustible gases 41 iron sulphate 41 fluffy flakes 41 rotting rubbish 41 burnoffs 41 hydrofluoric acid 41 tailings piles 41 watery sap 41 Vermiculite 41 carbon monoxide nitrogen dioxide 41 fog blanketed 41 inhaling dust 41 Eyjafjallajoekull glacier 41 emit sulfur dioxide 41 barbecue briquettes 41 erupting volcano 41 oily mist 41 cement kiln 41 chromic acid 41 Llaima volcano 41 gases 41 pozzolan 41 peat soils 41 airborne particles 41 Eyjafjallajokull Iceland 41 prevailing westerly winds 41 haze shrouding 41 smog forming gases 41 Iceland Volcano 41 groundwater plume 41 pollutant 41 vapors 41 thick acrid smoke 41 crystalline silica dust 41 cedar shavings 41 snow 41 cinders 41 dense volcanic ash 41 Kirkjubaejarklaustur 41 Tungurahua Volcano 41 Iceland volcanic eruption 41 flammable insulation 41 LAM coke 41 gaseous pollutants 41 debri 41 Soufrière Hills Volcano 41 fungal spores 41 unburned islands 41 chimney stacks 41 respirable crystalline silica 41 mill tailings 41 Bulusan 41 tailings pile 41 Prevailing winds 41 molten slag 41 ozone concentrations 41 uranium tailings 41 Iceland volcano ash cloud 41 ozone precursors 41 landfill 41 Icelandic volcanoes 41 carbon monoxide hydrocarbons 41 acrid haze 41 Volatile Organic Compounds VOC 41 particulate matter SPM 41 Iceland Eyjafjallajokull 41 Eyjafjallajoekull volcano 41 methane 41 Colombian volcano erupts 41 Centre VAAC 41 Icelandic volcano Eyjafjallajokull 41 incinerator ash 41 ash cloud spewed 41 cirrus cloud 41 flammable methane 41 duff layer 41 Magnus Tumi Gudmundsson 41 polluted groundwater 41 smoky skies 41 slag 41 gritty pulverized 41 woodstoves 41 sulphate aerosols 41 cumulus cloud 41 radionuclides 40 Asbestos fibers 40 Mount Semeru 40 shake shingle roofs 40 Augustine Volcano 40 sulfur dioxide mercury 40 thick pall 40 Okmok Volcano 40 moisture coals 40 Sulfur Dioxide 40 Chaiten volcano 40 smokestacks belching 40 Halema'uma'u 40 respirable coal 40 Diesel exhaust 40 stratus clouds 40 pine needles 40 radioactive fallout 40 airshed 40 hazelnut shells 40 radioactive plume 40 methyl isocyanate gas 40 ozone 40 Kelut 40 vegetative debris 40 radioactive contaminants 40 VOCs Volatile Organic Compounds 40 clouds shrouding 40 Spokeswoman Hjordis Gudmundsdottir 40 windblown sand 40 Mount Tambora 40 granulated rubber 40 plume drifting 40 stinking garbage 40 Mount Merapi spews volcanic 40 Kingston Fossil Plant 40 spewing lava 40 basalt 40 Snow squalls 40 Mount Tarawera 40 Dave Stricklan hydrometeorogical technician 40 Volcanic eruptions 40 sulfur fumes 40 sulfur gasses 40 airborne soot 40 radiactive 40 erionite 40 poisonous carbon monoxide 40 Icelandic volcanologist 40 TCE trichlorethylene 40 unburned fuels 40 Hotter temperatures 40 billowing clouds 40 finely powdered 40 acrid odor 40 porous sandstone 40 gases vapors 40 westerly winds 40 carbon monoxide particulate matter 40 Tropical Depression Fay 40 volcano erupted 40 woodchips 40 ozone depleting gases 40 eruptions 40 temperature inversions 40 granulated blast furnace 40 Kilauea volcano 40 flammable vapors 40 Mount Galunggung 40 tropospheric ozone 40 lahar flows 40 Sodium cyanide 40 smog blanketing 40 carcinogenic fumes 40 beneath Iceland Eyjafjallajokull 40 Newberry Volcano 40 gypsum 40 bird droppings 40 conifer needles 40 irritate lungs 40 hazardous eruption 40 Anatahan 40 pulverized concrete 40 tinder dry Nicklin 40 Mount Mayon 40 radioactive steam 40 carbon tetrachloride 40 basaltic rock 40 Iceland Eyjafjallajokull pronounced 40 Mount Mazama 40 Pacaya 40 ponderosa pine Douglas fir 40 lava rocks 40 explosive eruptions 40 ejecta 40 Thick smog 40 sulfuric gases 40 wood stove ashes 40 flood basalts 40 Redfield Wilder 40 oak beech 40 volcanoes billowed 40 Merapi 40 Anatahan volcano 40 sedimentation ponds 40 air toxics 40 Chaiten 40 planes Ramsauer 40 dioxins 40 hydrofluoric acids 40 particle pollution 40 nitrate 40 mine tailings 40 flammable vegetation 40 sediment dredged 40 greenish yellow 40 arsenic 40 chippings 40 smog 40 sediments 40 oak elm 40 tailpipe gases 40 Halemaumau Crater 40 nitrous oxides 40 chromium VI 40 nauseating odor 40 NOx 40 volcano spews ash 40 spewing radioactive 40 reburn 40 water vapor 40 Ecuador Tungurahua 40 Indonesia Merapi volcano 40 nitrogen oxides emitted 40 VAAC 40 alkali 40 Mt Merapi 40 tarlike substance 40 Elaine Makatura spokeswoman 40 obnoxious odors 40 trichloroethane 40 lava flowed 40 smog forming chemicals 40 goat droppings 40 Ubinas volcano 40 smoke wafted 40 contaminating groundwater 40 lava flow 40 gray smoke billowed 40 groundwater contaminant 40 particulate matter soot 40 toxins leaching 40 spokesman Ted Linnert 40 Acrid smoke 40 crocidolite 40 Snow flurries 39 Chris Waythomas 39 Volcanic gases 39 Fine particulate 39 PAHs polycyclic aromatic hydrocarbons 39 fumes 39 unlined trenches 39 hazardous chemicals 39 roiling plume 39 microscopic soot particles 39 radioactive wastes 39 Mount Pinatubo eruption 39 contaminated soils 39 magma molten rock 39 carbon dioxide CO2 39 arsenic contaminated 39 lahars 39 ay yah FYAH lah 39 Powerful gusts 39 sulfate aerosols 39 choking haze 39 Freezing fog 39 Iceland Grimsvotn volcano 39 asbestos 39 Mount Karthala 39 Halemaumau 39 subbituminous coal 39 petroleum coke 39 Untreated sewage 39 BTU lb 39 contaminated soil 39 fumes emanating 39 Ice floes 39 molten aluminum 39 mercury emissions 39 degreasing solvent 39 Puu Oo 39 smog forming compounds 39 Icelandic volcano eruption 39 metallic flakes 39 douglas fir 39 Mudflows 39 briquettes 39 Chaitén volcano 39 towering plume 39 Enviro Log firelogs 39 Ash 39 Jacques Durieux 39 inversion layer 39 exceedance 39 drifting volcanic ash 39 nitrogen dioxide carbon monoxide 39 radioactive iodine 39 calcine 39 Redoubt 39 Doe Run smelter 39 volcanic smog 39 Microscopic particles 39 Eyjafjallajokul pronounced ay yah 39 odorous gases 39 Icelandic Volcano 39 Bonnie Bartling 39 rumbling volcano 39 smoldering coals 39 Merapi eruptions 39 lime slurry 39 Nevado del Huila volcano 39 cement kilns 39 methyl isocyanate MIC 39 pine bark mulch 39 flue gas 39 calcium sulphate 39 biosolid 39 boulders cascaded 39 methane gas 39 chimney 39 poisonous gases 39 contaminated groundwater 39 drifting eastward 39 vulcanologist Surono 39 acid rain 39 Shinmoedake volcano 39 burning embers 39 Tiny particles 39 calcium oxide 39 showery outbreaks 39 Boom billows 39 particulate matter emissions 39 arsenic mercury 39 mercury potent neurotoxin 39 northern arctic plains 39 manure 39 mosquito insecticide 39 smog forming pollution 39 putrescible waste 39 began unleashing torrents 39 Particulate emissions 39 Sulfur compounds 39 particulate concentrations 39 decomposing trash 39 sulfur dioxide emitted 39 ash impoundment 39 sulfur dioxide nitrous oxide 39 sulpher 39 carbon sequestered 39 tiniest speck 39 mud 39 recyclate 39 toxic chemicals 39 silver iodide 39 Iceland Eyjafjallajoekull glacier 39 toxic nitrobenzene 39 greases oils 39 carbon monoxide 39 corrosive gases 39 silica fume 39 silica particles 39 erupting Mount Sinabung 39 prunings 39 particulate matter carbon monoxide 39 toxic waste 39 Ed Laguerta 39 Volcano eruption 39 volcanic plumes 39 PCBs polychlorinated biphenyls 39 Countywide landfill 39 wood stoves 39 allergenic pollen 39 spruce fir 39 ozone smog 39 Reykjavik Keflavik 39 lampblack 39 Iceland volcano ash 39 Eyjafjallajokull pronounced 39 Sulfuric 39 heptyl 39 bird guano 39 SO2 emission 39 harmful byproducts 39 clouds 39 microscopic particles 39 Toba eruption 39 Bromo 39 tephra 39 mudflow 39 crunches underfoot 39 carcinogenic toxins 39 flammable 39 massive Myrdalsjokull glacier 39 micro meteorites 39 oozing lava 39 anhydrite 39 groundwater contaminants 39 Mount Merapi 39 spokesman Fridthor Eydal 39 peat bogs 39 El Chichon 39 Reventador volcano 39 densest ash 39 naturally occurring asbestos 39 Afternoon thunderstorms 39 particles PM#.# 39 coarse particulates 39 cesium 39 hardwood forests 39 leachates 39 powdery 39 overlying layers 39 Radiation 39 Mount Kelut 39 earthy smell 39 Shawn Ferreria 39 pollutant ozone 39 allyl alcohol 39 pollutes groundwater 39 Iceland evacuates 39 Propyl mercaptan 39 tarlike 39 leachate 39 inhalable particles 39 coal combustion 39 marine sediments 39 noxious vapors 38 volcanologist Ed Laguerta 38 Ambae Island 38 Embalming fluid 38 Longwall mining 38 Mayon volcano 38 Icelandic volcanic ash cloud 38 sulfate particles 38 particulate emissions 38 electrostatic filters 38 sulfurous compounds 38 sulfur dioxide emission 38 Soot particles 38 aka ssa 38 Magnesium chloride 38 sulfur dioxide SO2 emissions 38 biosolids compost 38 VOCs volatile organic compounds 38 chemical vapors 38 moisture condenses 38 Shen Neng 38 Laki volcano 38 shredded bark 38 flue pipe 38 loess 38 Volcanic ash cloud 38 lapilli 38 decayed vegetation 38 loess soil 38 Dryer lint 38 incombustible 38 ash cloud drifting 38 acid sulphate 38 releasing toxic fumes 38 Christofi chest 38 flammable vapor 38 radioactive byproducts 38 Grimsvotn signaling 38 Toxic sludge 38 Shiveluch 38 pollen spores 38 Soputan 38 radiation 38 dredged sediments 38 unburnt fuel 38 Galeras 38 gob pile 38 Eyjafjoell eruption 38 particulate matter emitted 38 earths crust 38 carcinogenic dioxins 38 Gasoline vapors 38 acrid stench 38 loose chippings 38 Volatile Organic Compounds VOCs 38 #ft chimney 38 invisible odorless tasteless 38 Volcanologists 38 volcano erupting 38 cumulus clouds 38 Cotinus 38 Controlled burns 38 noxious pollutants 38 charcoal coals 38 silts 38 Darting subjects 38 bulldozers scraped 38 fire retardant 38 pyritic rock 38 belched smoke 38 Lake Nyos 38 smoke billow 38 chlorinated solvent 38 Wildland fires 38 Kasatochi Volcano 38 expose coal seams 38 FYAH' plah yer kuh 38 exceedence 38 Reilly Plating Co. 38 mulch 38 mercury vapor 38 Indonesian volcano 38 ashen gray 38 colorless flammable liquid 38 harmattan haze 38 temperature inversion 38 Latex paints 38 Shinmoedake 38 coal tar 38 pinon pines 38 dust billowed 38 Firefighters hosed 38 Mount Shinmoedake 38 biosolids 38 sulfur dioxide nitrogen oxide 38 landfill leachate 38 respirable dust 38 erupting Chaiten volcano 38 ammonia vapor 38 Finished compost 38 poisonous chlorine 38 Linville Gorge Wilderness 38 Kilauea summit 38 Sodium dichromate 38 absorbs odors 38 furans 38 noxious odors 38 nitric acids 38 monofill 38 groundwater 38 BP.com website early 38 landfilling 38 tritium contaminated 38 carbonised 38 oily globs 38 freezing fog 38 Blawn 38 sulphurous smell hung 38 brine 38 magma 38 vinyl chloride 38 polychlorinated biphenyl 38 hazardous wastes 38 pinon trees 38 Elemental mercury 38 carcinogenic chemicals 38 unlined pits 38 animals stomachs corroding 38 sludges 38 lah yer kuhl volcano 38 Nitrogen oxide emissions 38 Jovian atmosphere 38 Mount Sinabung spews volcanic 38 glowed orange 38 Kelud 38 foamy bubbles 38 carcinogenic PCBs 38 sulfer 38 claylike 38 maple oak 38 Indonesia Mount Merapi 38 clayey