Production:0682

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