Methane Emissions From U.S. Coal Mines in 1980
Bureau of Mines Information Circular/l984
Methane Emissions From U.S. Coal Mines in 1980
By Roy H. Grau Ill and John C. LaScola
UNITED STATES DEPARTMENT OF THE INTERIOR
Information Circular 8987
Methane Emissions From U.S. Coal Mines in 1980
By Roy H. Grau Ill and John C. LaScola
UNITED STATES DEPARTMENT OF THE INTERIOR William P. Clark, Secretary BUREAU OF MINES Robert C. Horton, Director
Library of Congress Cataloging in Publication Data :
Grau, Roy H. I11
Methane emissions from U.S. coal mines in 1980.
(Information circular / United States Department of the Interior, Bu-
reau of Mines ; 8987) Bibliography: p. 7. Supt. o f Docs. no.: I 28.27:8987. 1. Coal bed methane-United States-Statistics. I. LaScola, John C.
11. Title. 111. Title: Methane emissions from US coal mines in 1980. IV. Series: Information circular (United States. Bureau of Mines) ; 8987.
TN 295.U4 [TN 3051 6 2 2 s [622'.8] 84-600 148
CONTENTS Page
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ILLUSTRATIONS
. ............................... .1
Emissions States..
. .
.n.uam.b.e.r .o.f. .m. .i.n.e.s .. .a.n.d.
.m..e.an..a.n.d.
.m..e.d.ia.n..e.m..is.s.i.o.n.s.
.p.e.r..m.i.n.e..f.o.r..1.1..
.2 T o t a l e m i s s i o n s . number of mines. and mean and median emissions per mine
. .................................... .................................. for the 10 highest emitting coalbeds
3 Total gas content versus depth of coal.
. 4
5
Methane e Emissions
missi vers
o u
n s
s
v de
er pt
sus h of
t
o c
ta oa
l l
.g.a.s..c.o..n.te.n..t ...............................
TABLES
. ................................. 1 Comparison of emissions i n 1975 and 1980
. ... 2 Comparison of t h e 10 mines w i t h t h e h i g h e s t emissions i n 1975 and 1980
. 3
Mines mcfd
w. .it.h..m..e.a.su.r.e.d..t.o.t.a..l .g.a.s..c.o..n.te.n..t .d..a.ta..a.n.d..e.m..i.ss.i.o.n.s..g.r.e.a..te.r..t.h.a.n..0...1.
. A-1
Coal emi
mines ssions
.w. .i .t h.
.e.m..i.s.si.o.n.s.
.o.f..a..t .l.e.a..s
.t .0...1..M..M.c.f.d...l.i.s.t.e.d..b.y..o.r.d.e.r.
.o.f..
...
..
. ....... A-2 Coal mines w i t h emissions of a t l e a s t 0.1 MMcfd. l i s t e d by coalbed
................
................
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