Country State Classification Source WallNo Centennial Commercial Location surroundPic
United States Illinois Limestone Joliet 12RA30   y Front Face (South) Dscf0425.jpg
No 12RA30 is:

Description

cut from same block as 12LA31
light gray
fine grain
compact
Lower Silurian


ARCHIVE STONE NOT AVAILABLE

Actual Picture from the Stone Wall: /mid2000/12ra30.jpg (63575 bytes)