(Dow) at Dow Chemical in Pevely, Jefferson County, MO. SR Z E. 0.5 miles from jct with I55 exit 180, SE (right) on US61 0.6 miles, E. on Dow Industrial Dr. 300’, N. (turns E.) on Riverside Dr. 0.25 miles to the tower on the S. side of the road. (3-30-09, N38 17.102 W90 23.175) Photos by Jack Schmidt.