267582
Energetically Modified Cements are cementitious materials made from pozzolanic minerals ( e.g. fly ash , volcanic ash , silica sand , pozzolana , blast furnace slag ) that have been treated using a patented milling process ( " EMC Activation " ) .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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