Production:4064

year	DMM	operator	address	production	cumulative	opening	depth	seam	thickness	method	days	emp
1936	L-21	Blue Ribbon Coal Co., No. 1	Marion	5,920	5,920					ug	67	25
1937		B. & L. Coal Co.	Marion	1,915						ug	121	6
1938		B. & L. Coal Co.	Johnston City	2,660						ug	185	8
1939		B. & L. Coal Co.	Johnston City	4,382						ug	107	9
1940		B. & L. Coal Co.	Johnston City	2,382	11,339					ug	70	11
1940		I. D. Gosnell	Pittsburg	1,437	1,437					ug	38	12
1941		Merritt Coal Co.	Pittsburg	2,000	2,000					ug	90	8
1941		Smith & Warner	Herrin	579						ug	20	10
1942	not listed
1943	not listed				579
1944		Crystal Block Coal Co.	Marion	59,482		slope	60	#6	5.67	RP	277	25
1945		Crystal Block Coal Co., No. 2	Marion	66,778		slope	60	#6	5.67	RP	233	36
1946		Crystal Block Coal Co., No. 2	Marion	41,146		slope	60	#6	5.67	RP	170	36
1947		Crystal Block Coal Co. Inc.	Marion	69,000		slope	60	#6	6	RP	232	37
1948		Crystal Block Coal Co.	Marion	46,418		slope	65	#6	6	RP	155	48
1949	not listed
1950		Crystal Block Coal Co.	Marion	5,142	287,966	slope	65	#6	6	RP	26	45
					309,241