From U.S. Coal Mines in
Methane Emission
From U.S. Coal Mines in 1973, A Survey
A Supplement to IC 8558
Information Circular 8659
Methane Emission From U.S. Coal Mines in 1973, A Survey
A Supplement to IC 8558
By M.C. Irani, P. W. Jeran, and Maurice Deul
Pittsburgh Mining and Safety Research Center, Pittsburgh, Pa.
UNITED STATES DEPARTMENT OF THE INTERIOR Rogers C. B. Morton, Secretary Jack W. Carlson, Assistant Secretary-Energy and Minerals
BUREAU OF MINES Thomas V. Falkie, Director
This publication has been cataloged as follows :
7
Irani, Meherwan C Methane e m i s s i o n from U.S. c o a l mines in 1973, a survey:
a supplement t o IC 8558, by M. C. Irani, P. W. Jeran, and
Maurice Deul. [washington] U S . Bureau of Mines [1974]
47 p. tables. (U.S. Bureau of Mines. Information circular 8659)
Includes bibliography. 1. Coal mines and mining-U.S. 2. Mine g a s e s . I. U.S. Bureau of Mines. 11. Jeran, P a u l W., jt. auth. 111. Deul, Maurice, jt. auth. IV. Title. (Series)
TN23.U71 no. 8659 622.061 73
U.S. Dept. of t h e Int. Library
I
C ONTE NT S
Page
Abstract .............................................................. 1 Introduction............................................................ 1 Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Data sources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Methane i n coalbeds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Presentation of the data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Discussion ............................................................... 4 References ............................................................... 5
.- - Appendix A C h a r a c t e r i s t i c s of U.S. c o a l mines producing over 1 MM f t 3 /d
of methane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Appendix B.--Measured methane emission from c o a l mines of the United
S t a t e s with an emission r a t e of a t l e a s t 100.000 f t 3 / d . . . . . . . . . . . . . . . . . 13
Appendix C.--Methane emission i n r e l a t i o n t o counties from mines
emitting a t l e a s t 100,000 f t 3 /d from each bed . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Appendix D.--Methane emission from mines i n coalbeds with t o t a l mine
emissions i n excess of 1 MM f t 3 / d . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
METHANE EMISSION FROM U.S. C O A L MINES IN 1973, A SURVEY A Supplement to IC 8558
by Ma C. Irani, 1 P. W. J e r ~ n ,a~nd Maurice Deul3
ABSTRACT
his Bureau of Mines survey of methane emissions i n d i c a t e s t h a t t o t a l
d a i l y emissions have d e c l i n e d from 227 MM f t 3 i n 1971 t o 214.7 MM f t 3 i n 1973. The h i g h e s t average d a i l y emissions i n m i l l i o n c u b i c f e e t per day observed i n U.S. bituminous c o a l mines were, i n d e c r e a s i n g o r d e r , Monongalia County,
W . Va. , 40.7 ; Marion County, W . Va. , 23.1 ; Buchanan County, Va. , 22.1;
Washington County, Pa., 12.4; Greene County, P a . , 11.7; McDowell County,
W . Va. , 11.4; Cambria County, P a . , 9 . 8 ; J e f f e r s o n County, Ala. , 9.5; Wyoming
County, W. Va., 6.0; Marshall County, W. Va., 4.8; and Indiana County, Pa., 4.8.
INTRODUCTION
The presence of methane i n t h e a i r of c o a l mines c o n s t i t u t e s a n e x p l o s i o n
hazard w i t h which the Bureau of Mines has been concerned s i n c e i t s e s t a b l i s h -
ment i n 1910. Darton
r e p o r t e d on t h e occurrence of e x p l o s i v e gases i n
c o a l mines, based on a s t u d y begun i n 1907 under t h e s u p e r v i s i o n of J . A .
Holmes , who subsequently became t h e f i r s t d i r e c t o r of t h e Bureau of Mines.
H i s data were obtained from the a n t h r a c i t e f i e l d s i n Pennsylvania and the
s o u t h e r n bituminous f i e l d s i n I l l i n o i s . His s p e c i f i c o b j e c t i v e was " t o o b t a i n
." information on t h e o r i g i n of t h e inflammable gases i n c o a l and the c o n d i t i o n s
under which they occur
I n recent years the Bureau has been conducting a vigorous and increasingly comprehensive methane c o n t r o l r e s e a r c h program. The need f o r t h i s program i s evidenced by the f a c t t h a t while c o a l mine f a t a l i t i e s were decreasing i n the y e a r s from 1965 t o 1970, t h e number of f a t a l i t i e s due t o i g n i t i o n s and explo-
s i o n s i n underground c o a l mines was i n c r e a s i n g ( 2 ) . This i s a t t r i b u t e d l a r g e l y
t o the f a c t t h a t deeper coalbeds were being mined a t f a s t e r r a t e s and t h a t more methane was emitted under t h e s e condtions.
lMining engineer. 2~eologist. 3 ~ u p e r v i s o r yg e o l o g i s t . 4 ~ n d e r l i n e dnumbers i n parentheses r e f e r s t o the l i s t of r e f e r e n c e s preceding
the appendixes.
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