. Pittsburgh and Allegheny in the centennial year . g, erected the Pittsburgh Steel Works, manufacturing thereinblister, spring and plow steel, in which similar line of production the firm ofColeman, Hailman & Co. also pursued the business. Somewhere about this date a firm under the style of Tingle & Sugden, carry-ing on the manufacture of files, commenced on a small scale the making of caststeel for their files, aud likewise produced a quantity for general sale. Some-what previous to this, in 1841, Patrick and James Dunn began manufacturing caststeel for G. & J. H. Shoenberger. The works erec
. Pittsburgh and Allegheny in the centennial year . g, erected the Pittsburgh Steel Works, manufacturing thereinblister, spring and plow steel, in which similar line of production the firm ofColeman, Hailman & Co. also pursued the business. Somewhere about this date a firm under the style of Tingle & Sugden, carry-ing on the manufacture of files, commenced on a small scale the making of caststeel for their files, aud likewise produced a quantity for general sale. Some-what previous to this, in 1841, Patrick and James Dunn began manufacturing caststeel for G. & J. H. Shoenberger. The works erected by them were quite exten-sive, having eighteen or twenty holes or furuaces; but six of the holes were,however, run steadily. The enterprise was abandoned after a year or so. Oneof the causes that led to the relinquishment of the business was the difficultiesarising from the crucibles, which were made principally from American clays. OQ o o l> 0 n 0 o w w o *n a t-t ^•. t- 03 w > a m w p H w 9! D 02 » O bd m ^ IE H w ^ o SJ. jUi/ ^
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Keywords: ., bookcentury1800, bookdecade1870, bookidpittsburghal, bookyear1876
