To be really correct, you have to use Dover or Bangor. The stuff is about the same quality as Tallahatta quartizite. It is also in boulders, so they had to reduce it to a biface at the quarry site. The biface probably weighted, depending on what they were making, 20+ pounds. They then hauled them home and finished them. And they probably used wood batons. Those were some master knappers. Bill