Hogback Mine of the Robinson Brick + Tile Co Hogback - first mine vein- G thin-not moved ss2 Cl1 3 H/cl/ ss ss clay+base The ss thickens to S. 3 vein- consistently carbonaceous. - up to 6 lb-ssd silicstun, local coal, not very plastic and John says not very sandy. John says near surface more plastic-brown Between 3+4 is 15 ft white fire ss H4 is 2boc+ 6' thick. - has baszi bentonite, silty cl. lb silt just above. some Fe concs. in upper part Foot well rippled- call ripple vein 5+6-thin beds within 15 ft of #4 4/2/ss/2 ssded=ly/sandy/4ssd mixed 6. The #4 is upper Glaciztn-rest either Ozkote or the small Glaciztns thickened.