... soft limestone,etc.Large radius offset crested scoop compacts in inner row,wedge compacts in outer row,high compact exposure and ... with stringers,etc.Large radius offset crested scoop compacts in inner row,wedge compacts in outer row,high compact exposure and ... limestone,hard sandy mudstone and sandstone,etc.Conical compacts in inner row,spherical compacts in outer row.0.50~1.05200~40THJ637G637Medium ...