Production:0682

From ILMINES WIKI
year DMM operator production cumulative opening depth seam thickness method days emp
1939 L-71 Midwest Smokeless Fuel Corp. 325,275 325,275 255 60
1940 L-71 Midwest Radiant Corp., No. 1 592,938 262 66
1941 L-71 512,746 358 83
1942 L-71 536,275 291 84
1943 L-71 655,000 285 78
1944 L-71 604,658 290 73
1945 L-71 566,397 270 71
1946 L-71 629,280 280 41
1947 L-71 659,358 298 75
1948 L-71 679,446 298 89
1949 L-71 633,458 290 89
1950 L-71 612,586 6,682,142 surface 289 94
7,007,417