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(Click for frequent words.) 72 smokestack 53 soot belching 52 pollutants 52 towering smokestacks 51 chimneys belching 51 exhaust stacks 50 tailpipe gases 49 chimney stacks 49 factory smokestacks 49 smoke belching 48 mercury emitted 48 pollution 48 clouds billow 48 tailpipe exhaust 47 spew pollutants 47 belched smoke 47 smokestack scrubbers 47 Smokestacks 47 cooling towers 47 smokestack emissions 47 sulfur dioxide pollution 46 belching smokestacks 46 soot 46 belching smoke 45 smoke plumes 45 sooty 45 skyline 45 smokestacks belching 45 paddlewheels 45 densest cluster 45 mercury sulfur dioxide 45 #ft chimney 45 sooty particles 45 sulfur dioxide emissions 45 particulate emissions 45 soot pollution 45 Hatfield Ferry 45 pollutants emitted 45 chimneys 45 noxious gasses 45 install scrubbers 44 emit sulfur dioxide 44 sulfur dioxide 44 skylines 44 smokestack industries 44 tailpipes 44 smog forming nitrogen oxides 44 nitrogen oxide 44 particulate matter 44 coal fired 44 air pollution 44 billowing plume 44 slag heaps 44 skyscrapers 43 gypsum byproduct 43 Asarco smelter 43 smog forming pollutants 43 brick smokestack 43 particulates 43 pollutant 43 sulfuric acid mist 43 smog forming pollution 43 spiers 43 Nitrogen oxide emissions 43 soot stained 43 sulfur dioxide SO2 43 Norlite 43 coke ovens 43 airborne pollutants 43 nitrogen oxide pollution 43 emit pollutants 43 diesel exhaust 43 emissions 43 garbage incinerators 43 sulfur dioxide nitrogen oxide 43 mercury pollution 43 gray haze 42 manure lagoons 42 Clairton Coke Works 42 nitrogen oxide sulfur dioxide 42 baghouses 42 air pollutants emitted 42 Zug Island 42 sulfur dioxide pollutant 42 smokestack pollutants 42 Cement mixers 42 automobile tailpipes 42 soot particles 42 billowing smoke 42 windmills 42 particulate matter emitted 42 Burning fossil fuels 42 billowing sails 42 flickering shadows 42 noxious pollutants 42 rhythmic whoosh whoosh whoosh 42 fine particulate pollution 42 Pollutants 42 belching exhaust 42 Particulate pollution 41 toxic pollutants 41 intake vents 41 oil derricks 41 spiral galaxy M# 41 sulfur dioxides 41 diesel fumes 41 nitrogen oxides emitted 41 smoke belched 41 acrid aroma 41 rusted pipes 41 plumes 41 Particulate emissions 41 Nitrogen oxides 41 Sulphur dioxide 41 tailpipe pollutants 41 Sulfur dioxide pollution 41 smog forming chemicals 41 culm banks 41 subway grate 41 Fenholloway River 41 church steeples 41 smog soot 41 smog forming gases 41 carcinogenic fumes 41 Monongahela River 41 flue gases 41 Gulls swoop 41 nitrogen dioxide carbon monoxide 41 mercury emissions 41 Manhattan skyline 41 Smoke billowing 41 harmful pollutants 40 particulate soot 40 polluted groundwater 40 turbines 40 polluting 40 gasometers 40 nitrogen oxide emissions 40 antipollution 40 CO -2 40 fetid odor 40 soot particulates 40 smog 40 acid rain 40 Akron Airdock 40 brownish haze 40 Elbe river 40 Emissions 40 Kammer Mitchell 40 slag piles 40 belching 40 polluted 40 smog forming compounds 40 Karn Weadock 40 train trestles 40 kiln dust 40 gnarled oak 40 Contaminated groundwater 40 blowdown drums 40 pine timbers 40 ozone particulates 40 sulfur dioxide SO2 emissions 40 ash ponds 40 pungent odors 40 towering chimneys 40 emitted 40 sulfates 40 installing scrubbers 40 exhaust fumes 40 Lakeview Generating Station 40 sulfur dioxide nitrogen oxides 40 Particulates 40 sulfur dioxide mercury 40 Woonasquatucket River 40 groundwater plume 40 sulfurous gases 40 PCB contaminated sediments 40 hulks 40 carbon belching 39 rusting hulk 39 gaseous pollutants 39 nitrogen oxides sulfur oxides 39 outfall pipes 39 Urbaszewski 39 rusting hulks 39 airborne particulates 39 rough hewn logs 39 Shippingport 39 grain elevators 39 billowing clouds 39 WH Sammis plant 39 defunct Bethlehem Steel 39 coalfired 39 masted schooners 39 toxic chemicals 39 fireboxes 39 gypsum stacks 39 Billowing clouds 39 #,# butadiene 39 greenhouse gas 39 diesel particulate 39 obnoxious odors 39 leather tanneries 39 creosote pilings 39 gave Beijingers respite 39 acrid stench 39 belching fumes 39 Prunerov II 39 polychlorinated biphenyls PCBs 39 blast furnaces 39 Diesel exhaust 39 Sulfur dioxide 39 Tonawanda Coke 39 hoofed critters 39 particulate pollutants 39 particulate pollution 39 airborne toxins 39 particulate matter emissions 39 SO2 39 plume 39 synthetic gypsum 39 fume belching 39 nitrogen oxides sulfur dioxide 39 sagging porches 39 Fairless Works 39 Groundwater contamination 39 noxious chemicals 39 fume spewing 39 carbon monoxide particulate matter 39 belches smoke 39 harmful vapors 39 superfund cleanup 39 Huge plumes 39 icicles dangling 39 glowed orange 39 towering blast furnaces 39 sulphate aerosols 38 Toxic Release Inventory 38 glowed eerily 38 sulphate particles 38 noxious gases 38 mountain ridges 38 ozone particulate matter 38 tanneries 38 billow 38 Vikki Michalski spokeswoman 38 Peeling paint 38 steel mills 38 nitrogen oxide NOx emissions 38 Nanticoke Generating Station 38 toxics 38 thunderhead 38 sulfate particles 38 carbon dioxide 38 particulate matter soot 38 polluters 38 greenhouse gases 38 gasworks 38 diesel particulates 38 taconite pellets 38 rusting 38 Meredosia Ill. 38 mercury polluter 38 toxins 38 Maximum Achievable Control 38 evaporation ponds 38 sulfur oxide SOx 38 carferry 38 particles emitted 38 boats bobbed 38 wind turbine towers 38 Danskammer 38 PCBs polychlorinated biphenyls 38 wastewater discharge 38 nitrous oxides 38 polyaromatic hydrocarbons 38 pollute 38 particulate matter sulfur dioxide 38 sulfur dioxide SO2 nitrogen 38 particulate matter nitrogen oxides 38 heavily polluted 38 aeration tanks 38 emmissions 38 polychlorinated biphenyls 38 Smolny monastery complex 38 Exhaust fumes 38 raw untreated sewage 38 clouds billowing 38 scrubbers 38 creosote soaked 38 Douglas fir beams 38 Untreated sewage 38 tailpipes smokestacks 38 WH Sammis 38 cliff caverns 38 effluents 38 mourning Bilardo 38 benzene arsenic 38 smelter smokestack 38 rotting timbers 38 Nitrogen oxide 38 tailings piles 38 toxic vapors 38 fly ash 38 Cow manure 38 Kiskiminetas River 38 irritate lungs 38 metallic flakes 38 Lake Macatawa 38 Polluted runoff 38 polluted stormwater runoff 38 nitrogen oxides 38 boathouses 38 Clairton Works 38 sulpher 38 sulfur gases 38 geoelectric 38 Bethlehem Steel Corp. 38 acrid smoke billowing 38 electromagnetic radiation EMR 38 Heavily polluting 38 wood pilings 37 methyl chloroform 37 hazardous vapors 37 gob piles 37 sulfur dioxide particulate matter 37 downwind 37 SO2 emissions 37 microwaving popcorn 37 neoclassical facade 37 harmful particulates 37 incinerator ash 37 rotting stinking 37 limestone bluffs 37 emission 37 gnarled oaks 37 Darting subjects 37 noxious vapors 37 Thick smoke 37 glassless windows 37 unlined landfills 37 nitrogen oxides NOx 37 carbon dioxide emissions 37 Prevailing winds 37 HoltraChem 37 crenelated 37 turbine blades 37 heat trapping pollutants 37 Baikalsk Pulp 37 reed grass 37 skyscape 37 billowing plumes 37 silhouetting 37 noxious odors 37 cupola furnace 37 CFCs chlorofluorocarbons 37 belching steam 37 contaminated groundwater 37 nitrogen oxide NOX 37 concrete monstrosities 37 riverfront 37 gray smoke billowed 37 sulfur dioxide particulates 37 furnaces 37 Vacant storefronts 37 fine particle pollution 37 Budd Inlet 37 lakes Keowee 37 Asbestos fibers 37 fluidized bed boiler 37 heat trapping carbon dioxide 37 Doe Run smelter 37 putrid odors 37 drawbridges 37 gasified coal 37 Batavia Transmission 37 nitrogen oxides NOx emissions 37 graceful arcs 37 eyesores 37 Philip Sporn 37 concrete casks 37 slurry ponds 37 radioactive nuclei 37 sulfur fumes 37 Neckar River 37 polluter 37 orangey yellow 37 skipjacks 37 inhale fumes 37 beehive burners 37 smelly fumes 37 carcinogenic chemicals 37 railroad sidings 37 wind turbines 37 Carbon dioxide emissions 37 sailboat masts 37 crystalline silica dust 37 muck dredged 37 sludge 37 Conemaugh River 37 decaying 37 Wind turbines 37 smokestack pollution 37 loblolly pines 37 coalfired power 37 soot smog 37 acrid smoke 37 wispy clouds 37 Mispillion River 37 Gustav Eiffel 37 Thick smoke drifted 37 sequester CO2 37 wooden timbers 37 Nitrogen Oxide 37 exhaust pipes 37 sulfur trioxide 37 toxic byproducts 37 ghostly glow 37 brick ovens 37 pungent scent 37 faint hum 37 Rubbertown 37 coarse particles 37 Effluents 37 steam locos 37 bridge abutments 37 attracting vermin 37 unburnt fuel 37 steamships 37 gases 37 molten steel 37 cumulous clouds 37 unlined landfill 37 hydrocarbon vapors 37 Spent fuel rods 37 harmful gases 37 Bethlehem Steel 37 baghouse 37 steel mill 37 emissons 37 cottonwood trees 37 megawatt pulverized coal 37 smoggy 36 eerie stillness 36 Soot particles 36 fine particulates 36 combustion gases 36 Squaw Creek Mine 36 Mount Merapi spews 36 blowholes 36 sulfur dioxide emitted 36 whitish gray 36 disagreeable odor 36 Edge Moor 36 limestone quarries 36 Brayton Point 36 windmill blades 36 crumbling facades 36 Clean Air 36 orange orb 36 sulfur dioxide nitrogen dioxide 36 coke oven 36 iron girders 36 stainless steel fermenting 36 Cohoes Falls 36 woodsmoke 36 gases vapors 36 tailings basin 36 marble facade 36 Icicles hanging 36 Carbon dioxide CO2 36 putrid smell 36 krypton 36 Carbon dioxide 36 cityscape 36 coke oven gas 36 benzene vapors 36 Letart Falls 36 toxic gasses 36 Co op grain elevator 36 Ruhr Valley 36 Junked cars 36 scows 36 stately elms 36 dredged sediment 36 HO Oats 36 Thick clouds 36 FirstEnergy Davis Besse 36 smoke wafts 36 nitrogen dioxide emissions 36 nauseating odor 36 Gothic spiers 36 waterwheels 36 sunken hulk 36 Hydroelectric dams 36 towering skyscrapers 36 jet contrail 36 foamy bubbles 36 emitting greenhouse gases 36 culm 36 discharger 36 bucolic landscapes 36 digester tanks 36 Algae blooms 36 spinning blades 36 oVOCs 36 pungent fumes 36 acrid smoke billowed 36 coal ash impoundments 36 hulk 36 respiratory irritant 36 Cows graze 36 railroad tracks 36 cornfields 36 electron accelerators 36 pollute waterways 36 PCBs dioxins 36 cooling tower 36 CO -2 emissions 36 factories 36 acrid odors 36 Elwha Dam 36 sticky ooze 36 gypsum mines 36 Nabisco factory 36 phosphorescent glow 36 septics 36 polluted waterway 36 lampblack 36 crenellations 36 Skippack Creek 36 Tittabawassee River floodplain 36 railroad trestle 36 Monongahela rivers 36 radioactively 36 billowing 36 nitrogen oxide emission 36 rancid smell 36 riverfronts 36 Zonolite Mountain 36 putrid odor 36 tailpipe 36 Pollution 36 sulfurous steam 36 Thick plumes 36 Billowing 36 supertall 36 Allenport Pa. 36 whoosh whoosh whoosh 36 corrosive salts 36 blackberry thickets 36 Volatile organic compounds 36 gob pile 36 flue gasses 36 waste decomposes 36 noxious 36 mercury chromium 36 luscious greenery 36 cumulus clouds 36 cranes dot 36 chuffing 36 dischargers 36 Greenhouse gases 36 San Onofre Nuclear 36 Bayonne Bridge 36 Curtis Specialty Papers 36 ash 36 battleship gray 36 toxic effluents 36 incense wafts 36 pollutant emissions 36 sulfur dioxide scrubbers 36 Kyger Creek 36 concrete abutments 36 towers 36 coarse particulates 36 foul smelling odors 36 LTV Steel 36 Trifid 36 Clifty Creek 36 pollutant emission 36 PCBs 36 Wixom assembly 36 acrid fumes 36 pier jutting 36 acrid odor 36 carbon dioxides 36 sulfer 36 mountaintop removal mines 36 gliding silently 36 cabbage palms 36 barns outbuildings 36 onlookers gaped 36 silt laden 36 Tuojiang River 36 florescent light 36 orange fireballs 36 lava cascading 35 water vapor 35 charcoal kilns 35 Fairport Harbor lakefront 35 polution 35 lamprey larvae 35 spinning turbine blades 35 Ruddiman Creek 35 sulfur gasses 35 Jacobsville neighborhood 35 cookie cutter McMansions 35 smoke billow 35 Bromo Seltzer Tower 35 Empty storefronts 35 whirling blades 35 pungent stench 35 Zalev 35 Ultrafine particles 35 sulphurous smell hung 35 Steam locomotives 35 TCE trichlorethylene 35 Vinyl chloride 35 odorous gases 35 pentachlorophenol 35 thawing tundra 35 carcinogenic benzene 35 microscopic soot 35 trichlorethylene 35 unpleasant smell 35 sewage spews 35 nimbus clouds 35 coal tar 35 fumes emanating 35 inhaling silica 35 zeppelins 35 polluting factories 35 haze enveloping 35 satanic mills 35 smogs 35 tailing ponds 35 barge tow 35 discharging contaminates 35 tiny soot particles 35 rusted barbed wire 35 diesel particulate emissions 35 noxious smell 35 watertower 35 bald cypress trees 35 locust trees 35 regulate greenhouse gases 35 foremast 35 smoke belching factories 35 hydrocarbons carbon monoxide 35 towering cranes 35 pump jacks 35 taconite mines 35 cement kilns 35 grimy 35 mossy green 35 earthy smell 35 mercury vapor lights 35 Domino Sugar 35 airsheds 35 biomass combustion 35 chlorinated solvent 35 Bevatron 35 lakeshores 35 cottonwood seeds 35 begrimed 35 HEPA filtering 35 Kokosing River 35 gleaming towers 35 vapor trails 35 Great Lakes steamships 35 Soot 35 photovoltaic solar arrays 35 harmful byproducts 35 Redpath Sugar 35 scudding clouds 35 nitrous oxide emission 35 Radioactive tritium 35 combustion byproducts 35 brick façades 35 hazardous waste incinerators 35 railroad roundhouse 35 Steel Clairton Coke 35 Great Lakes freighters 35 ASHTA 35 iron grates 35 nitrous oxide N2O 35 tannery 35 odors wafting 35 Attica Ind. 35 slag heap 35 tailpipe emissions 35 rotting piers 35 air toxics 35 grainery 35 Marmot Dam 35 gaslights 35 hissing steam 35 EPA Toxics Release 35 wooden pilings 35 chimney stack 35 lungs Setree 35 formaldehyde benzene 35 absorption chillers 35 containing soot dioxins 35 Molten metal 35 Carefully cautiously 35 Union Carbide factory 35 rust belt 35 Mothball Fleet 35 greenhouse gasses 35 particulate matter carbon monoxide 35 sulfur dioxide nitrous oxide 35 Little Mermaid statue 35 leafless branches 35 ornate facades 35 smog haze 35 Pulverized coal 35 Sakonnet River Bridge 35 orangish 35 suspected carcinogen 35 Leaf blowers 35 rises majestically 35 hydrogen chloride 35 Smoke pours 35 taconite plants 35 phosphorus pollution 35 Leaking pipes 35 NOX SOX 35 quaint crescent 35 swamp maples 35 Claiborne Pell Bridge 35 Prunerov 35 Blown transformer 35 roofed atrium 35 ammonia hydrogen sulfide 35 Hanford Wash. 35 rusting hull 35 gnarled trunks 35 Goose droppings 35 expose coal seams 35 gargoyles 35 stoker coal 35 greenhouse gas nitrous oxide 35 Grzegorz Pawlaszek head 35 kilns mills 35 gambrel roof 35 coke oven batteries 35 shuttered factories 35 rusted hulks 35 cement kiln 35 atmospheric moisture 35 muffled roar 35 lumber barons 35 glass prisms 35 sky scrapers 35 Veniaminof 35 girders 35 burning fossil fuels 35 smoke pluming 35 whirly birds 35 palmetto trees 35 pigeons perched 35 atmospheric haze 35 shaped pinatas 35 wooded ridges 35 emit CO2 35 Edwardsport Ind. 35 Tailings ponds 35 leafy canopy 35 gristmills 35 atmospheric pollutants 35 Evraz Rocky Mountain 35 moss draped trees 35 PM#s 35 underground coal seams 35 sulfur oxides nitrogen oxides 35 particulates sulfur dioxide 35 lenticular clouds 35 cobbled walkways 35 steep bluffs 35 thin wisps 35 clouds 35 carbon monoxide nitrogen dioxide 35 Uprooted trees 35 Kinzua Viaduct 35 malarial swamp 35 Sunlight streams 35 Bunker Hill Bridge 35 Freshwater mussels 35 Burrard Thermal 35 manmade lakes 35 ionized particles 35 photochemical smog 35 nauseating stench 35 carbon dioxide emitted 35 ash sludge 35 yellowish glow 35 textile mills 35 carbon monoxide nitrogen oxide 35 mercury 35 Codorus Creek 35 pollutants sulfur dioxide 35 dimly visible 35 shellfishing waters 35 Waukegan Harbor 35 stucco facade 35 ammonia nitrogen 35 particulate 35 lime kilns 35 TVA Widows 35 lawnmowers leaf blowers 35 grayish ash 35 CO2 35 Badger Army Ammunition 35 Tiny particles 35 polychlorinated biphenyl 35 carbon dioxide emission 35 microscopic soot particles 35 interstellar clouds 35 prows 35 gleaming 35 Astoria Megler Bridge 35 cathedrals 35 downgradient 35 ghostly silhouettes 35 Charles Sturcken spokesman 35 leafless trees 35 Foul smelling 35 deplete ozone 35 horizontal slits 35 blast furnace coke 35 Particle pollution 35 Sagittarius dwarf galaxy 35 molten iron 35 radially outward 35 tall steeples 35 Pigeon droppings 35 whitewashed cottages 35 odors emanating 34 ironworks 34 airborne pollutant 34 Sidney Lanier Bridge 34 polycyclic aromatic hydrocarbons 34 SunCoke 34 Chemetco 34 mercury dioxins 34 hydrocarbons nitrogen oxides 34 SO2 emission 34 brick chimney 34 settling ponds 34 Vivian Stockman 34 combustible dust ignited 34 hazardous waste incinerator 34 Pequonnock River 34 manure piles 34 methyl cyanide 34 along seashores rivers 34 greenish yellow 34 Linotype machines 34 fieldstone foundation 34 Ravenna Army Ammunition 34 belfries 34 soapy bubbles 34 millrace 34 steeples 34 clapboard cottages 34 unheated garages 34 Inventory NPRI 34 smelting furnaces 34 smog forming 34 chrome bumpers 34 megawatt coal gasification 34 Superfund cleanup 34 foul odors emanating 34 thunderstorms loomed 34 Florange 34 clouds scudding across 34 Taum Sauk hydroelectric 34 Globular clusters 34 treeless landscape 34 Spider webs 34 ladle metallurgy 34 carbon monoxide nitrogen oxides 34 Against Smog 34 storage tanks 34 Carrie Furnace 34 LaFarge Cement 34 tabular icebergs 34 carbon dioxide CO2 34 sulfur coals 34 cigarette smoke 34 Huang Pu River 34 nitrogen dioxides 34 incinerators 34 Fuhrmann Boulevard 34 trash incinerator 34 scrubber sludge 34 shimmering 34 Smoke rises 34 Dig tunnels 34 dust motes 34 polluted sediment 34 foul smelling sludge 34 ocean liners 34 Nimishillen Creek 34 AB# mandates 34 Lenin statues 34 pollutes 34 ash byproduct 34 ash impoundments 34 OWBs 34 coal slurry ponds 34 Ludington Pumped Storage 34 Wafting 34 livestock confinements 34 Vaux swifts 34 faint wisps 34 yellowish hue 34 Neisse river 34 Exposed beams 34 Ruston smelter 34 glowing lava 34 lattice towers 34 glows orange 34 sulfur oxide 34 VOC Volatile Organic Compounds 34 concrete monoliths 34 untreated raw sewage 34 PGE Boardman 34 steam boilers 34 Taconite Harbor 34 emitting 34 Monocacy River 34 RE Burger 34 noxious smells 34 Polluting 34 Dug Pond 34 Astoria Column 34 turbid reservoir 34 railyard 34 fiberglass resin 34 leaching toxins 34 GhG emissions 34 Volcanic gases 34 quaysides 34 monoliths 34 Dense clouds 34 fetid smell 34 tall granite obelisk 34 Treated sewage 34 wispy cirrus clouds 34 Clear Skies Initiative 34 harmful contaminants 34 sandalwood incense 34 condo towers 34 Wanaque Reservoir 34 spire 34 GHGs 34 sprayfields 34 towering 34 AEP Mountaineer 34 noxious fumes 34 acrid scent 34 NOx emissions 34 Generating Station 34 thick plume 34 rustbelt 34 downriver 34 arsenic cyanide 34 limestone slabs 34 Leland Olds 34 emit carbon monoxide 34 Knolls Atomic Power 34 tailpipe pollution 34 trichloroethane 34 flame flickers 34 silo 34 vermiculite ore 34 Propane tanks 34 Reads Landing 34 wilting flowers 34 NedPower Mount Storm 34 eyesore 34 methyl isocyanate 34 toxic pollutant 34 Tailpipe emissions 34 bullrushes 34 thick acrid smoke 34 Fiberglas Tower 34 slag pile 34 granite quarried 34 boiler slag 34 Conveyor belts 34 ozone depleting gases 34 silvery 34 spewed benzene 34 carcinogenic PCBs 34 steam condenser