Pennwood1, Sorry to hear about your pond troubles. But with that much chert (flint), you could go to some Pow Wows and sell some of that flint. Pow wows are American Indian artifact shows that have a lot of arrowhead and any flint utinsel makers there. And they are always looking for good flint for their craft. You could maybe use some of that money to recoup your losses. I've seen some of their work and it looks better than the real ones.
Good luck Kevin...I wish you the best!!!
