Rings Coal Products in Auburn has rice coal
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I'm not sure about Down East Coal In Gouldsboro, they deliver anywhere, but may not have rice http://www.downeastcoal.com/
Farmingdale agway carries Blaschak rice but that is down by Augusta and you would have to pick it up. 582-4604
I will check with my other dealers, I am not sure if they carry rice or not. I burn pea and nut. I keep a list of every dealer I can find and call them all once a week or so to check prices.