Weights of Anthracite Coal. [Volume: 8, Issue: 4, 1889, pp. 241]

No. 4.]

CHARCOAL IRON WORKERS.

241

Weights of Anthracite Coal.
THE Engineering and Mining Journal gives an exhaustive table of
the weights per cubic foot and the specific gravities of anthracite
coal from the different seams of the Susquehanna Coal Company at
Nanticoke, Pa., from which the following is condensed:
In 14 specimens taken from the Mills Seam, No. 4 Slope, the specific gravity ranged from 1.421 to 1.490, with an average for the
seam of 1.452.
The Hillman Seam, No. 2 Slope, in 11 specimens, the specific
gravity varied from 1.443 to 1.517, with an average of 1.4673.
The 6 specimens from the Forge Seam, No. 1 Shaft, had specific
gravities running from 1.4555 to 1.541, with an average for the
seam of 1.482.
The specific gravities of the 8 specimens taken from No. 2 Shaft
of the Twin Seam were from 1.449 to 1.527, an average for the seam
of 1.480.
The average for the Buck Mountain Seams, No. 1 and 2 Shafts,
was 1.521; the specific gravities of the 10 specimens ranging from
1.496 to 1.540.
The general average for all the seams was 1.4784.
The weights per cubic foot were as follows:
Weights per Cubic Foot of Susquehanna Coal Company's WhiteAsh Anthracite Coal.
Consisting of about: Pounds.
45 per cent. from Mills' Seam, average weight per cubic foot,. 90.46
15 per cent. from Twin Seam, average weight per cubic foot,. 92.20
25 per cent. from Ross Seam, average weight per cubic foot,. 93.00
15 per cent. from Buck Mountain Seam, average weight per
cubic foot,.. 94.75
100 per cent. all seams, average weight per cubic foot,..92.00
From tests made January 27th, 1889, at No. 5 breaker.
Space filled as loaded at breaker without settling. Add 5 per cent for packed
spaces or large heaps.
THE Atalla furnace, at Atalla, Etowah County, Alabama, went
into blast on June 15th. It is a new charcoal stack, built by the
Atalla Iron and Steel Company.