Related by context. Frequent words. (Click for all words.) 46 steel mills 45 polluters 44 smokestacks 44 coal 44 Rust Belt 44 smokestack 43 carmakers 42 polluting 41 coal mines 41 smelters 41 steelmakers 41 polluter 41 industrial 41 automobiles 40 fossil fuels 40 automakers 40 steelworks 40 smelting 40 fossil fuel 40 coal mining 40 emissions 40 Carmakers 39 coal fired 39 Soviet Union 39 Soviet bloc 38 steelmaking 38 factories 38 boomtown 38 railroads 38 pollution 38 gas guzzlers 38 acid rain 38 blast furnaces 37 environmentalists 37 greenhouse gases 37 heat trapping gases 37 industrialized 37 autos 37 utilities 37 superpower 37 Emissions 37 industries 37 burning fossil fuels 37 economies 37 greenhouse gas emission 36 Soviet empire 36 mining 36 emission 36 rare earths 36 Bethlehem Steel 36 former Soviet republics 36 Kyoto accord 36 steel mill 36 sulfur dioxide emissions 36 pollutants 36 furnaces 36 industrialization 36 steelworkers 36 export oriented 36 textile mills 36 plants 35 large swaths 35 coal miners 35 greenhouse emissions 35 greenhouse gas emissions 35 nations 35 mercury emissions 35 emitters 34 Developing nations 34 capitalists 34 emerging economies 34 electric utilities 34 global warming gases 34 mines 34 carbon dioxide emissions 34 Kyoto Protocol 34 uranium mines 34 regulate greenhouse gases 34 metals 34 renewables 34 Europeans 34 Industrial Revolution 34 Automakers 34 emission reductions 34 gas guzzling 34 Soviet era 34 ores 34 industrialized nations 33 smelter 33 republics 33 carbon emissions 33 SOEs 33 industrialized economies 33 Kyoto treaty 33 monopolies 33 autoworkers 33 mercury pollution 33 brownfields 33 carbon emission 33 capitalism 33 downtowns