The Mining Magazine: Devoted to Mines, Mining Operations, Metallurgy, &c., &c, Volume 8

acid adit alloy alumina aluminium amount angle anthracite average bar iron bars blast furnace bottom Canal carbon cast iron cent cinder COAL TRADE coke colliery Company containing copper cost Creek crude iron cwts cylinder deposits depth diameter district engine equal expense experiments fathoms feet forge franklinite fuel gold graphite greater groove heat improvements inches increased labor Lake Superior length lime limestone lode magnetic malleable manganese manufacture mass matter metal miles mill mineral months mountain nearly obtained opened oxide perpendicular Phosphoric acid pig iron pile plate portion pounds present produced proportion puddling puddling furnace quantity quartz rail Railroad reduced refined river rock rods rolls Schuylkill Schuylkill County seams shaft side silica silver soil steam steel strata sufficient sulphur sulphuric acid superior surface temperature thickness tion tons Total Valley vein wrought iron yield zinc