COI.LKC'TloNS IN' K(M)N0M1(; (iKOI.(><;V AM» M K lAIJ.I in; Y. 1 I'.t 



(7) Mut;iii'tili' iiiiil liniiilil" inlr. .Mi<I»ii;;iimin' Mim-, .MuKinct n- ('oiiiity, Mic-liigmi. 



(8) lltMiialito. CliJipiii MiiH', M.'iioiiiim'i' ('i)iiiity. Micliijiaii. (r>471.Mj.) 

 ('.») lIoiiKititt!. (.;iia|>iii Mini', MiMKunineo County, Mi(lii;;aii. ('1471).').) 



(10) Horiiatit<>. Lmliiiuti'ri Miii'-, M.-ii'>miii('t> Comity. Miclii;;aii. {'>\'[t7., 



(11) HiMiiatitt'. Summit .Miin«, (►iitim:ii,'oii Couiity, Mi<rhi;;aii. ('>47;^'.) 

 (1-J) llemaliU'. Tilot Knob Mine, Iron County, MiBsouri. (.VHO'J.) 



/■/;/!. 



(1) LimoHtonc. Chifa;fi>. Conk ("onnty. Illinois. (.'>4784.) 



/•in/. 

 (1) Coki'. (.'onin^llsvillf, I'juinsylvania. (.MT70.) 



Products. 



(1) Slag, from pii'viniis t.ip of metal. (4r)7.'i:?. ) 



(2) Slag, lust Hnsb, V2.\'> p. m. {'i\7'i'2.) 



('^) Slag, second llnsli ; jnst liolbre tapping metal, 1.4i» p. m. (."»47r)4.) 



(4) I'ig-iron, from beginning ot tap, "i.O'J p. ni. Gnule l^. (r»4.-ilH. ) 



(.'>) I'lg-iron, ehill sample I'lom beginning of tap. (548'21.) 



(t)) Slag, skimnu'd from tlio iron while tapping, 2.1.'i p.m. (.'>47r).').) 



(7) Pig-iron, from end of taj), 2.-J0 p. m. Grade, U, (r>4'^r.>.) 



(8) Pig-iron, eliilled sample from end of tap. (.")4826.) 



STEEL IlOrSE srECIMEXS. 



The second ladle of heat 10 of the blast fiiniace was selected to follow 

 throiifjh the process as "blow No. 13391.'' The metal weijjfhed 1*L',4(»<> 

 pounds. The record of the blow is as follows : 



1,(M)() i)ounds of scrap-iron were char^iMl into the converttT. :iih1 at — 



',',Mi p. in. the pig-irou was ponred. 



3.04 p. ni. converter turned and blast lot on. 



3.07 p. m. .seeond period began. 



3.10 p. m. third period began. 



3.125 P- '"• end of blow. 



3. 13i p. m. converter turned down and blast shut otf; length of blow '.»J miii- 



ntes; blast varied from I-' to 20 ]ionnds. 

 3. IH p. m. 1,200 pounds of .spiegel added. 

 3.1(Ji jt. ni. steel poured into ladle. 

 3.19 p. in. (irst ingot east. 

 3.23 p. III. eighth ingot cast. 

 3.34 p. ni. raohls stripped from ingots. 

 3.48i p. in. eighth ingot loaded on car. All were then taken to the scales. 



(1) Pig-iron, chill sample, taken as the metal Mowed Irom the blast furnace into 

 the second ladle. 2.ir> p. ni. (.'>478(>.) 



(2) Pig-iron, chill sample, taken as tin' metal was ponred from the bulle into the 

 converter 3'.> minutes after. (r>4H2l.) 



(3) Graphite skull, taken from the bottom id the hot metal ladle. (.■>4747.) 



(4) Converter spittings, consisting of globules of metal and slag thrown from tlie 

 month of the con vert ir by the force of the blast during the eon ver-^ion of the pig-iron 

 into steel. (.'.47(U». ) 



(.">) .Steel stag, fornieil in the converter during the conversion id" pig-iron intosteel; 

 aaiiiple taken from under the converter. (547.")0. ) 



