Lime kiln ruins at High Cliff, Wis., on 20 March 2021. These are the upper kilns depicted in the background of the photograph to the left. Limestone quarrying, and later lime burning, was established here ca. 1855 by the J. A. Day & Co., later Cook, Brown & Co., later Cook & Brown, later Union Lime, later Western Lime. The latter company closed the operation in 1956. This facility was served by the M&N, and later MILW, from 1891 to 1956. Photograph by Tom Bruss.