VAUOHAN.] 
SAN CARLOS COAL FIELD. 
87 
CHARACTER OF SAN CARLOS COAL. 
The San Carlos coal is lustrous black in color, compact, and has a 
dark-brown streak and a subcubical cleavage. The following analyses 
were made by Dr. Peter Fireman: 
A noli/si* of San Carlos coal from mine No. 4, lower seam. 
Moisture 
Vol. hydrocarbon 
Fixed carbon . . . . 
^ . F. C. ) 
Ratio v H c ) 
Ash 
Color of ash 
Coke 
Upper part of 
seam above 
binder. 
1.09 
39. 61 
35. 29 
24. 01 
Bro w n i sli 
gray. 
Co he re 11 1, 
hard, lus- 
trous. 
Just above 
binder 
(coking) . 
1.17 
39. 93 
35. 39 
.886 
23. 51 
Cray. 
Coherent, 
hard, lus- 
trous. 
Below bind< 
(coking) . 
1.19 
39. 73 
10.30 
1.01 
18.78 
Gravis h 
brown. 
Coherent, 
hard, lus- 
trous. 
In clay above 
lower seam. 
1.68 
60. 37 
24.89 
.41 
13. 06 
Reddish 
brown. 
Coherent, 
lustrous. 
[nalysis of San Carlos coal from mine No. 4, lower seam. 
Coal (shaft). 
Coke. 
Moisture 
.97 
40. 95 
43. 77 
1.06 
14. 31 
Yellowish gray. 
1.24 
4.96 
66. 93 
Vol. hydrocarbon 
Fixed carbon 
Ratio R C " 1- 
icatio y H c j 
Ash 
Color of ash 
26. 87 
Coke 
Coherent, hard, 
lustrous. 
