Daily Press file photo Jo Deaton, left, and Tamar Mannikko, archeology students from Michigan Tech University, uncover the collapsed chimney of what might have been a cookhouse at a site near Nahma in 1999. The students had been working on a joint project with the U.S. Forest Service to excavate the site of a sawmill built 150 years ago.

Daily Press file photo

Jo Deaton, left, and Tamar Mannikko, archeology students from Michigan Tech University, uncover the collapsed chimney of what might have been a cookhouse at a site near Nahma in 1999. The students had been working on a joint project with the U.S. Forest Service to excavate the site of a sawmill built 150 years ago.