6/24/98. Photo of 5/16/95 (#26) of Tschiggfrie quarry east of U.S. 52 about 1 to 1 1/2 miles south of junction with U.S. 401; photo from southern entrance to quarry off of Olde Massey Road. There are road cuts between the junction US 20 and US 52S, one which shows a nice bedding break which probably a bentonite. Also along US 20 there are some impressive road cuts of the Dubuque Fm. See (18) Becker X . 1 photo.