Tulsa daily world. [volume] (Tulsa, Indian Territory [Okla.]) 1905-1919, 1913-08-31

whore a little coal has been stripped
/ IN former years. The stripping Was
/ formerly done by teams rhcro are
/ large areas throughout the coal re-
/ slnn where steam shovel stripping
| may DE successfully carrlod on. The
/ thickness of the surface which can
| be- economically removed depends on
/ the thickness and quality Of he coal.
pat IN most cusos 20 To 30 feet can
be removed
The upper ana lower Hartshornc
Goals are also called GRADY cOals.
noar Atpka called "Atoka" I'm Cav
anal mountain region hy name "Paua-
ma at Lohigh called "lehirh" The
McAlester coal is known as Paris"
coal I'm Arkansas, The Cayanal coal
occurs IN Cay3nal mountains. Tho
Nlttovllle coal ana Jones creek are
me same coal Tho HcuWetta coal
outcrop from Hcnryetta north tu the
Kansas line, Dawson coal in vicinity
Of Dawson and Tulsa. Other local
names are applied to the various beds.
Quality Of Oklahoma Coal.
The oklahoma Goals compare IA
Norably with the Goals from other
states with which they are brought
into competition, The, results which
are being obtained i'm tnc laboratory
are proving very satisfactory Tho
greatest caro- possible is being used in
making the tests ON the samples of
coal, the chemical laboratory of the
survey being especially fitted for IN,
work, a new supply of an chemicals
secured for this particular work The
chemist Is giving his entire lime 10
The making OF the coal analysis, no
other worl, being carried ON IN the
laboratory at the same time.
Much coel is now being bought on
The basis of the heat value The heat
value is expressed In culorios or Brit
lHh thermal units, or as /, is expressed
lu analysis and specifications b. t. u.
The y. L. u. represents the amount
of heat necessary 10 raise one pound
of water through one degree Of tenn
pcraWre Fahrenheit scolc. Thar ls
pound OF coal containing $4,000
B. t. u, would increase the tcmpera-
ture Of 1900 pounds Of water
through one degree T.. or would con-
vert 14.5 pounds Of water into steam
at PIP degrees II no heat were lost
i'm the process. The apparatus used
for the work Is calorimcter There
are several makes in use.
The different makes differ slightly
IN the results obtained, but tests made
with the same style of apparatus are
very uniform. The chief purpose is
to have a standard Of comparison.
In making approximate analysis Of
coal the following determinations are
made; Moisture, volatile matter,
fixed carbon, ash and sulphur.
Beginning of State Mining.
Coal production in Oklahoma be-
gan I'm 1872 when the Usage company
began operation. In 1850 the pro-
duction was l20,941 tons The maxi
mum production was in 1907 when
S,642,G5S tons were produced. In
19l1 the production was 2,02T242
tons. The total production for 1912
shows an incroas. over 1911. The In
dustry during tho last nine years has
been practically stationary and has
not shown the development and prog
ress exhibited I'm other states.
The number OF men employed I'm
the coal mines Of Oklahoma in 1911
was 500, who worked an average
of 1876 days The coal is shot from
the solid and the miners are paid ON
n mino-run basis. The coal makes
from 80 10 .5 per cent Clack There
1ro about 125 mines i'm the state. in-
Guiding The strip pits
Comparison of Prices
In 1910 and 1911 the average price
Of coal al the mine In various states
is given as follows: