David
Being what they use this stuff (road base and cement additive ) for I am sure there shipping method is rail cars .
Bad
I think they are too big and I am too small in their view point and they are 300 or so miles away . I still am going to call her back this afternoon and see what the numbers really are . What kind of price did they give you ? Or did you get that far .

I have heard of guys using sand for media but I agree with you guys in the size and the finer it is the slower it will drain
Does anyone know offhand what the weight per cubic foot / or yard ? for Expanded shale
Have A Kind Day
Mike