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I have pretty much the same job, in the same state as you. I'm going to assume that you are residential because everything you stated would blow out on most commercial jobs. also, some companies have alot higher percentage of flyash than others, if you have them in your area, LaFarge has a huge percentage. I've heard they make alot of money doing it that way. For everyone else, to my understanding "flyash" is basically just chemical waste that some engineer figured out could be mixed in with concrete and it goes away.... yeah, smart guy. I have also seen it concrete from companies with a high concentration of it do some odd things like cure warts, or would that be burn them off? In any case, they go away.
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"How soft your fields so green, Can whisper tales of gore"
"Thou art god"
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