subsurface geology and coal resources of the pennsylvanian system ...

RICHLAND COUNTY 123
greater part of the drill holes not shown
were drilled in the Noble pool.
COAL RESOURCES
The most reliable information in regard
to the occurrence of coal beds of workable
thickness in Richland County, other than
thin beds that outcrop and occupy positions
in the upper part of the IUcEeansboro
group, is that supplied by the records of the
nine control drill holes. In 19W3 a tabulaticn
similar tr; that presented in table 11
was published, in which data were given
for seven control drill holes logged before
June 1, 191-3. Two other holes in the
county have been logged since. In 194414
it was stated that No. 6 and No. 5 beds
were believed to be essentially widespread
in the county at depths between about 1000
and 1100 feet for No. 6 bed with No. 5
bed lying 50 to 75 ieet lower. Assuming
the average total thickness of these two beds
to be about 6 feet, the county (357 square
miles) is underlain by approximately 2000
million tons of coal in these two beds (1
million tons per square mile-foot) .
Hole No. 39 penetrated two beds of coal,
the upper reported as 5 feet thick and the
lower as 3 feet at 1435 and 1459 feet re-
l3 Illinois Geol. Survey Rept. Inv. 93, p. 57, 1944.
Idem., p. 41.
spectively, 404 and 428 feet below the top
of No. 6 bed and 964 and 988 feet below
sea level. Hole No. 147 penetrated a 3-
foot coal bed 368 feet below the top of No.
6 (1368 feet deep; 878 feet below sea
level), and hole No. 193 penetrated two 3-
foot coal beds at 1359 and 1426 feet respectively,
865 and 933 feet below sea level,
and 186 and 253 feet below No. 6 coal bed.
It seems probable that "No. 4," "No. 2,"
"Davis," and "Dekoven" coal beds are
all represented in one or another of these
records, but there is inadequate evidence
to establish a condition of widespread distribution
for any of these coal beds. For
this reason an estimate of the amount of
coal present in these beds is not attempted.
No. 6 coal bed in Richland County generally
lies more than 1000 feet in depth.
The character of the coal, so far as ~t ' can
be determined from cuttings from drill holes
in Richland County, is shown in table 1,
page 16, analyses Nos. 6-2698, C-2599,
and C-2866. The moisture values shown
are probably several percent units too low
as compared with the actual moisture content
of the coal, but even sa the heat values
are relatively high for Illinois coals, whereas
sulfur values are about average. The
caal may be slightly better than average
Illinois coal, but not as high quality as the
highest grade coal mined in the State.