Mines and Mineral Statistics. 
^ 5 ^ 
the middle of it, leaving 6^ feet of good marketable coal, the 
upper portion of which is a very line semi-hituminous coal, and 
the lower portion below the band is a very rich close-grained 
steam coal, forming in the whole a very valuable and useful seam 
of coal 63 feet thick of clean marketablo coal. I consider this 
seam will underlie 500 acres of the estate, and will therefore 
yield 5,815,400 tons of good coal, which will supply a vend of 
500 tons a day for over thirty-six years. 
No. G Seam. 
Of the series lying about 40 feet below the No. 5 Scam, con- 
sists of two beds of coal, together 14 feet thick ; the lower portion 
or 7 feet only have as yet been opened out; this portion has tliree 
thin bands of shale running through it, together about 5 inches, 
reducing the thickness of marketable coal to OJ feet. This is a fine 
semi-anthracite coal, with several very thin hands of blturainoua 
coal running through the seam, which will I think tend greatly 
to cheapen its production. The upper 7 feet portion has not yet 
been tried, but from its outcrop appearance I have no doubt a 
large portion, if not the whole, will be found a good marketable 
coal; but taking that portion only which has already been proved, 
namely GJ- feet, which will underlie the wliole of the estate of GOO 
acres, will yield 5,853,000 tons, which will supply an output of 
500 tons a day for forty years. 
Aggregate Yield, 
The five seams of coal contained in this 600 acres of land will 
therefore yield the enormous, and I may almost safely state the 
unprecedented quantity of 31,250,000 tons of coal, wiiich will 
supply a vend of 1,000 tons a day for over 100 years; this is inde- 
pendent of the exceedingly rich bed of kerosene oil shale, which 
IB sufficient to yield 2,000 gallons of refined oil per week for over 
seventy-two years. 
AV'innixg, &c.— Working. 
The position of all the seams that I have mentioned are so 
favourably situated that the coal from each can be got by tunnel- 
ling into the side of the mountain range and conveyed to the pro- 
posed railway terminus below by self-acting incline planes 
I append a section of measures taken by barometrical obser- 
vations. 
