I poured my husband's grandfather's ashes into the fireplace, what should I do?

He is not here right now but I was going to get the fire going and I had the poker over my shoulder, but the telephone rang and when I spun around I knocked the urn off. It landed in the fireplace and all the ashes spilled. I don't know what to do his grandfather is mixed in with the fireplace ash now. Also it is very cold and now I can not start a fire.