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The Colorado Coal and Iron Company later merged with the Colorado Fuel Company to form the Colorado Fuel & Iron Company , which for many years was Colorado 's largest employer and dominated industry around the state for decades .
 Colorado Coal, Iron, Colorado Fuel, Colorado Fuel & Iron Company, Colorado
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Colorado Coal, Iron, Colorado Fuel, Colorado Fuel & Iron Company, Colorado