Production:2739

year	DMM	operator	address	production	cumulative	opening	depth	seam	thickness	method	days	emp
1935		Dennis Hamilton	Streator	152						ug	100	2
1936	9			128						ug	80	3
1937	L-9			154						ug	92	3
1938	L-9			70	504					ug	32	2