THE LOWER COAL MEASURES. 103 
at the Manufacturers’ Coal Company’s mine, by coking it. Two grades 
of coke have been produced—a soft coke, designed for house fuel, and a 
harder coke, turned to uses in which sulphur and other impurities 
would not be particularly objectionable. 
The soft coke yields of ash, 14.07; sulphur, 2.73. 
The hard coal gives the following results: Ash, 17,47; sulphur, 
3.66. 
The Ohio and Pennsylvania Coal Company is also making an effort 
in the direction of the utilization of the slack by washing it, and send- 
ing out a pea coal that answers a fair purpose as a steam fuel in 
stationary engines. 
The roof and floor of the coal are both characteristic in all respects. 
The Upper Freeport limestone is less conspicuous here than elsewhere, 
from the fact that several other limestones of the same character are 
fully developed in this district. 
The Strip Vein or Brush Creek coal of Salineville has always 
enjoyed an excellent reputation in the markets which it reaches, and 
this reputation it fully deserves. It is a harder and purer coal than 
the Big Vein, and has been turned to different uses. It has always 
been highly approved as a milling coal, and it makes also a good 
domestic fuel. Its average composition is shown in the following 
analysis of the coal from the Anderson Bank of the Manufacturers’ 
Coal Company (Lord) : 
INI@ISEUTO sere recess eer es eae e cateees Ua tre ceecee ere Necte vice Sica eesececn ea basecdrecess 3.26 
Wolatillenmiatterkcckts.ciceee celine sek ee eee eens ok oh oe Saat eoaelve neal oletiboceccuiasecks 37.49 
HINCORGATIOO Mu meeeree sree saaicct nee sis eels Memeo mel eae wena s cas ot eaea ee bowie Soke 53.74 
JAEIO Gok bocRBGAd SAGES CHOPRA CHELRBORC CEE LORNA NCS AAMOAD ASA HEARS RSE ETS BORE RR 5.51 
LN OCAIER A cart: esl eoe ne aceater ener aR een Sc sinsloes deinen isdeeennseaeveboseeuneee 100.00 
OU ppTatanPece een antrs eile wes seek eens tdsteles cacctaoltina te gechcscieees siectsnaeiaes 1.21 
These figures stand for an excellent coal in all respects. 
The seam ranges in thickness from 2 ft. 6 in. to 4 ft., but it is 
counted a 3 feet seam. When it does not exceed this measure it is 
generally undivided, and is equally good from top to bottom. But in 
the heavier measures a lower bench comes in, that is an addition to the 
seam in measurement mainly, for its coal is sulphurous and impure. 
When burned it has the bad characteristic of “running on the grate.” 
The bottom bench serves, however, for “bearing in,” and thus affords 
