346 Anthracite Coal of Pennsylvania. 
on the whole very unimportant. This anthracite is evidently 
substantially the same thing at Mount Carbon, Mauch Chunk, 
or at Wilkesbarre. 
** We have used the Lehigh coal in our cupola, and after 
an experience of two years, we find that by using one bushel 
of Lehigh coal to five bushels of charcoal, we can melt dou- 
ble the quantity of iron in the same time—for instance, where 
we formerly melted twenty-five hundred weight of iron in our 
cupola, starting at 10 o’clock, A. M. and ending at 6 P. M. 
we, by using Lehigh coal mixed with charcoal as aforesaid, 
now melt fifty hundred weight. By using charcoal exclu- 
sively we formerly crisidrel castings over ten hundred pre- 
carious to run by cupola, we now by using Lehigh coal can 
run Castings over twenty hundred without danger. We dis- 
cover Lehigh coal does not harden the iron, but it comes out 
ray.” 
. Chty Foundry, Phila. May 26, 1824. CAD. & O. EVANS. 
“ This certifies that having used the Lehigh coal for some 
time past, and fairly tested its qualities, we do not hesitate to 
state, thatitis, for use ina Cupola Furnace, entitled to a de- 
cided preference over any kind of fuel we are acquainted 
with, as it regards economy, and that the iron is not injured, 
but, on the contrary, rather improved in quality.” 
(Signed) ROBERT M’QUEEN, and others. 
*‘T have used Lehigh coal for melting copper and brass, 
for the last two years, and give it the preference toany other 
fuel. 
‘‘ I consider common pine coal a nuisance in a brass foun- 
der’s shop for melting metal.” 
; CHARLES GREEN, 
Philada. May 14th, 1824. Brass Founder, No. 54, New-street. 
“We, James and Joseph Whitaker, proprietors of the 
Delaware rolling mills, have used Lehigh coal for rolling our 
iron for nearly three years, and find it so much superior to all 
other species of fuel which we have ever used, that we would, 
now that our workmen are accustomed to and prefer it, rather 
pay thirty cents per bushel for it, than get Richmond or Liy- 
erpool coal for nothing.” 
Philada. May 24th, 1824. J. & J. WHITAKER. 
