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Table 4. Average chemical composition of coal in the SCCF and CNCF.<br />
Composition (average) SCCF (Carbo-Permian) CNFC (Jurassic)<br />
ultimate analysis<br />
Carbon<br />
Hydrogen<br />
Oxygen<br />
Nitrogen<br />
Sulfur<br />
proximate analysis (d.a.f average)<br />
Volatile Matter<br />
Fixed Carbon<br />
Ash<br />
Moisture<br />
Calorific Value (Kcal/Kg)<br />
95.13%<br />
1.49%<br />
1.62%<br />
0.20%<br />
1.16%<br />
< 5.4<br />
94.6<br />
24.3<br />
4.18<br />
5769<br />
93.3%<br />
0.70%<br />
4.10%<br />
0.21%<br />
0.96%<br />
< 7.6<br />
92.4<br />
35.33<br />
3.28<br />
4745<br />
In 2001, KIGAM and USGS had carried out preliminary CBM desorption tests of anthracite<br />
in the SCCF. Eighteen coal samples were collected from the working face of five<br />
underground mines in the SCCF (Table 5). All samples contained measurable coalbed <strong>gas</strong>.<br />
Samples collected in two coal mines, Jangseong and Dogae, were relatively low in coalbed<br />
<strong>gas</strong> content with
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