Production:4110

From ILMINES WIKI
year DMM operator address production cumulative opening depth seam thickness method days emp
1934 Helms & Smiley Marion 2,500 2,500 ug 150 4
1935 R. E. Helm Marion 3,300 3,300 ug 270 4
1936 Helm Coal Co., No. 1 Marion 800 800 ug 82 3
6,600