DKTAILKl) DKSCRIITION'R OF TIllO U KS1'E(;TI V K COAI.KIKLDS. 
by ineuiis of boring and .sinking no workable deposit has been 
mot with. The most promising locaUty is at Therabwin, but even 
here the coal is of poor quaHty and occurs in thin lenticular strings 
seldom more than 2 or 3 inches in thickness. 
The Tertiary coal is found in a narrow synclinal trough, 14 
miles in length by 2 miles in breadth, traversed from end to 
end by the Great Tennasserim liver. The dip of the rocks varies 
from 30° to 35°. Coal is found only on the western side of the 
river. It was first worked in 1841 at Cha Mitwe (formerly Thatay- 
Chaung) in the village of Tendan where the thickness is about 
7 feet. In this locality the coal seam probably extends along 
the strike for about 1| miles. Assuming the average thickness to 
be only four feet the amount of workable coal within a depth of 
300 feet from the surface would be more than half-a-million tons. 
About 11 miles further up-stream coal outcrops in Kamapying 
in the Heinlat stream, and again in the Htiphanko stream three 
quarters of a mile further north. The maximum thickness of the 
coal on the Heinlat is 23 feet, but borings and sinkings extending 
for about 300 feet along the strike proved it to be somewhat 
irregular. The section exposed by excavation on the Htiphanko 
was : — 
Coal 0' 10" 
Shale 2' 0" 
Coal 2' 3" 
Shale 3' 0" 
Good coal 4' 6" 
Assuming that the Kamapying seam extends for three-quarters 
of a mile along the strike, with a workable thickness of 15 feet, 
the amount of coal within a workable depth of 300 feet would 
be nearly 900,000 tons. The following are analyses of the Kamapy- 
ing coal : — 
Heinlat Htiphanko 
stream. stream 
(lower bed). 
Moisture . . . . . . 16-40 11-34 
Volatile matter .... 35-08 36-40 
Fixed carbon 44-24 43-27 
Ash 4-28 8-99 
The first sample caked poorly and the latter not at all. The coal 
■night be floated down the river to Mergui in shallow draught 
