||A G.S.C. bronze tablet stamped 3015 and set in a concrete bridge over Big Creek, 3.35km west of junction of Highway No 18 and Essex Road 50, OPP station on corner of intersection, tablet in south face of east concrete abutment, 37cm from southeast corner and 0.61m below top. Approximately 100 metres west of Creek Road. Horizontal Position updated to NAD83CSRS in January 2010.
Horizontal position updated September 2018 based on description and Google Earth. Previous position: N 42.063056, W 83.076111.